Carbon footprint calculation for ultramarathon runners, showing sustainable practices.

How Ultramarathons Are Becoming More Sustainable in 2025

by

📌 1. Introduction

🌿 What Makes an Ultramarathon Sustainable?

Ultramarathons, known for pushing human endurance to its limits, are now transforming in another way — they are becoming more sustainable. As environmental concerns continue to rise, runners, organizers, and brands are actively seeking ways to reduce their ecological impact. But what does it mean for an ultramarathon to be “sustainable”?

In essence, a sustainable ultramarathon minimizes its environmental footprint, reduces waste, promotes ethical practices, and supports local communities. From cupless races that eliminate single-use plastics to eco-friendly running gear made from recycled materials, sustainability is becoming a core focus of these extreme endurance events.

🌿 Why Sustainability Matters in Ultramarathons

Ultramarathons often take place in pristine natural environments — mountain trails, dense forests, and coastal routes. These breathtaking landscapes are also fragile ecosystems, making it essential for both runners and organizers to adopt sustainable practices.

  • Environmental Protection: Reduced plastic waste and carbon emissions help preserve the natural beauty of race locations.
  • Community Support: Local races boost regional economies while minimizing travel emissions.
  • Athlete Responsibility: Runners are encouraged to choose eco-friendly gear and participate in cupless events.

🌿 Key Elements of a Sustainable Ultramarathon

To fully understand sustainable ultramarathons, we need to explore their key components:

  • Cupless Races: Eliminating single-use plastic cups by requiring runners to carry their own hydration solutions.
  • Eco-Friendly Running Gear: Shoes, apparel, and accessories made from recycled or renewable materials.
  • Carbon Footprint Reduction: Calculating and minimizing emissions through local race participation and carbon offsetting.
  • Waste Management: Recycling, composting, and using biodegradable materials in race kits.
  • Local Support: Prioritizing local races to reduce travel emissions and support regional economies.

🌿 The Rise of Eco-Conscious Running in 2025

As we enter 2025, sustainable ultramarathons are more than just a trend — they are a movement. Race organizers are implementing zero-waste policies, brands are launching eco-friendly gear, and runners are making mindful choices that align with their environmental values.

  • Cupless races are becoming standard, reducing plastic waste.
  • Eco-friendly shoes and apparel are gaining popularity among runners.
  • Carbon offset programs allow participants to neutralize their race emissions.
  • Local races are thriving, offering a more sustainable alternative to international events.

Are you ready to discover how to embrace eco-conscious running in 2025? Let’s dive into the details.

📌 2. What is a Sustainable Ultramarathon?

🌿 Defining Sustainable Ultramarathons

A sustainable ultramarathon is an endurance race that minimizes its environmental impact while promoting ethical practices and community support. These races go beyond simply being an athletic challenge; they are designed to respect the natural landscapes they traverse and reduce their ecological footprint.

In a sustainable ultramarathon, race organizers, participants, and supporting brands all play a role in maintaining environmental responsibility. This involves using eco-friendly gear, adopting zero-waste policies, and choosing race locations that prioritize local sustainability.

🌿 Key Components of a Sustainable Ultramarathon

✅ 1. Cupless Races: Eliminating Plastic Waste

Cupless races are a defining feature of sustainable ultramarathons. In these events, runners are required to carry their own reusable hydration containers — such as foldable cups, soft flasks, or hydration vests. This approach significantly reduces single-use plastic waste.

  • Example Races: High Lonesome 100, Trail Marathon, Grandma’s Marathon.
  • Benefits: Eliminates thousands of plastic cups per race, reducing litter and environmental impact.
  • Runner Tips: Invest in a lightweight, reusable silicone cup for easy hydration.

✅ 2. Eco-Friendly Running Gear: Sustainable Choices

Sustainable ultramarathons promote the use of eco-friendly gear, including shoes, clothing, and accessories made from recycled or renewable materials.

  • Sustainable Running Shoes: Brands like Allbirds, Vivobarefoot, and Merrell offer shoes made from recycled plastics, natural rubber, and plant-based materials.
  • Recycled Clothing: Patagonia, Cotopaxi, and Sundried produce performance apparel made from recycled fabrics.
  • Reusable Accessories: Hydration packs, silicone cups, and compostable energy gel packaging.

📝 Pro Tip: Look for products with certifications like “Carbon Neutral” or “Recycled Content” for genuine sustainability.

✅ 3. Carbon Footprint Reduction: Traveling Greener

One of the most significant environmental impacts of ultramarathons is the carbon emissions generated by participant travel. Sustainable ultramarathons focus on reducing these emissions in several ways:

  • Local Race Participation: Encouraging runners to choose races close to home.
  • Carbon Offset Programs: Allowing participants to neutralize their travel emissions through donations.
  • Eco-Friendly Transportation: Promoting carpooling, public transport, and cycling.

🌍 Example: Grandma’s Marathon offers participants the option to offset their travel emissions by supporting local forest conservation projects.

✅ 4. Waste Management and Recycling

A sustainable ultramarathon minimizes waste through efficient waste management strategies:

  • Zero-Waste Policies: Organizers provide recycling, composting, and waste separation bins.
  • Biodegradable Materials: Race bibs, shirts, and medals are made from recycled or compostable materials.
  • Compostable Nutrition Packaging: Energy gels and snacks use compostable wrappers.

🏅 Notable Race: The Trail Marathon uses compostable cups and implements a zero-waste policy, setting a high standard for sustainability.

✅ 5. Local Race Support: Community Sustainability

Supporting local races is a core aspect of sustainable ultramarathons. By choosing regional events, runners can significantly reduce travel emissions while also boosting local economies.

  • Local Suppliers: Organizers source race gear, food, and services locally.
  • Community Involvement: Local volunteers support race operations.
  • Regional Conservation: Part of the race fees is donated to local environmental initiatives.

🌿 Example: The SF Marathon partners with local organizations for waste management and conservation projects.

🌿 Why Choose a Sustainable Ultramarathon?

Sustainable ultramarathons offer numerous benefits for runners, organizers, and the environment:

  • Positive Environmental Impact: Reduced waste, lower emissions, and preserved natural landscapes.
  • Ethical and Transparent Practices: Clear sustainability policies and eco-friendly certifications.
  • Healthier Running Experience: Clean air, natural trails, and minimized plastic pollution.
  • Community Support: Strengthening local economies and environmental initiatives.

Sustainability in ultrarunning is not just a trend — it is a necessity. As the sport continues to grow, the responsibility to protect natural race locations and reduce environmental harm becomes even more critical.

Ready to explore the most popular sustainable practice — cupless races? Let’s dive in. 🚀

Local sustainable ultramarathon with public transport and recycling stations, 2025.

📌 3. The Rise of Cupless Ultramarathons

🌿 Cupless Ultramarathons: A Zero-Waste Solution

Cupless ultramarathons are a revolutionary approach to race hydration. Instead of offering thousands of single-use plastic cups at hydration stations, race organizers require runners to bring their own reusable containers.

  • How Cupless Races Work: Runners carry their own silicone cups, soft flasks, or hydration vests.
  • Zero-Waste Impact: Eliminates tens of thousands of plastic cups per race.
  • Popular Cupless Events: High Lonesome 100, Trail Marathon, Miwok 100K.

📊 Did You Know? A single ultramarathon with 500 participants can generate over 10,000 plastic cups. Cupless races eliminate this waste entirely.

🌿 Why Cupless Races Are More Sustainable

  • Reduced Plastic Waste: No more discarded cups littering race trails.
  • Enhanced Safety: No slippery plastic cups on the ground.
  • Runners Take Responsibility: Athletes become more mindful of their hydration habits.

🌿 How to Prepare for a Cupless Ultramarathon

✅ 1. Choose the Right Reusable Container

  • Collapsible Silicone Cups: Lightweight and pocket-sized.
  • Hydration Vests: Ideal for long-distance runners.
  • Soft Flasks: Compact and easy to refill.

✅ 2. Practice Efficient Refilling

  • Use aid stations strategically.
  • Master one-handed refilling with silicone cups.
  • Consider bringing two small containers for faster hydration.

✅ 3. Respect Race Rules

  • Follow the event’s hydration guidelines.
  • Carry enough water for isolated sections of the race.
  • Be prepared for self-sufficiency in remote areas.

🌿 Top Cupless Ultramarathons to Join in 2025

  • High Lonesome 100: Colorado, USA – A pioneer in cupless racing.
  • Trail Marathon: USA – Zero-waste event with strict sustainability rules.
  • Grandma’s Marathon: USA – Carbon offset options for participants.
  • Waldo 100K: USA – Carbon offset through Trail to Zero program.
  • Ultra X Series: Global – Carbon offset and sustainable race routes.

🌿 Transitioning to Cupless Racing: Challenges and Solutions

While cupless races are highly sustainable, they come with their own set of challenges:

  • Runner Resistance: Some athletes are unfamiliar with carrying their own hydration.
  • Safety Concerns: Risk of dehydration if runners are not prepared.
  • Logistics for Organizers: Need for clear hydration guidelines.

Solution: Organizers should provide detailed guidance on hydration options, and runners should practice with reusable containers during training.

📌 4. Eco-Friendly Running Gear: Sustainable Choices for Ultramarathoners

🌿 Why Eco-Friendly Gear Matters in Ultramarathons

Running gear is an essential part of any ultramarathoner’s toolkit. However, traditional gear production often involves harmful environmental practices, from excessive plastic use to energy-intensive manufacturing. Sustainable gear offers an eco-conscious alternative without compromising performance.

  • Lower Environmental Impact: Recycled materials reduce waste and energy consumption.
  • Healthier for Runners: Natural, breathable fabrics enhance comfort.
  • Ethical Production: Brands committed to fair labor practices and green energy.

🌿 Sustainable Running Shoes for Ultramarathons

Your shoes are the most important part of your running gear, and sustainable options are now more accessible than ever. These eco-friendly shoes are designed to reduce your carbon footprint without sacrificing durability or comfort.

✅ Best Sustainable Running Shoe Brands

  • Allbirds: Carbon-neutral shoes made from natural materials like merino wool and sugarcane.
  • Vivobarefoot: Recycled plastics, plant-based materials, and a repair program to extend shoe life.
  • Merrell: Durable trail shoes made from recycled plastics and plant-based rubber.
  • On Running: Fully recyclable shoes with a focus on circular design.

🌱 Eco-Friendly Shoe Models:

  • Allbirds Tree Dasher 2: Lightweight, carbon-neutral, perfect for road and trail running.
  • Vivobarefoot Primus Trail II: Rugged, minimalist design with recycled materials.
  • Merrell Moab Flight: Trail-ready shoes with a sustainable upper made from recycled mesh.

📝 Pro Tip: Look for shoes with eco-certifications like “Carbon Neutral” or “Recycled Content” for guaranteed sustainability.

🌿 Eco-Friendly Running Apparel: Clothing That Cares

From shirts to shorts, your running apparel can also be a source of sustainability. Brands are now producing high-performance gear made from recycled fabrics, organic cotton, and even natural dyes.

✅ Top Brands for Sustainable Running Apparel

  • Patagonia: Recycled polyester, organic cotton, and Fair Trade-certified manufacturing.
  • Cotopaxi: Eco-friendly materials, ethical sourcing, and a commitment to sustainable development.
  • Sundried: Recycled materials and carbon-neutral production.
  • BAM (Bamboo Clothing): Natural bamboo fibers, breathable and antibacterial.

🌱 Recommended Sustainable Apparel:

  • Patagonia Capilene Cool Trail Shirt: Made from 100% recycled polyester.
  • Cotopaxi Teca Half-Zip Windbreaker: Lightweight, packable, and made from leftover fabric.
  • Sundried Performance Leggings: Recycled plastic bottles turned into durable, moisture-wicking fabric.

📝 Eco-Tip: Choose apparel that is versatile for multiple conditions, reducing your need for excess gear.

🌿 Sustainable Running Accessories for Ultramarathoners

Sustainable ultramarathon accessories ensure you stay eco-conscious beyond your shoes and clothing. These include hydration packs, reusable cups, and compostable nutrition packaging.

✅ Essential Sustainable Accessories

  • Reusable Silicone Cups: Perfect for cupless races (e.g., Hydrapak SpeedCup).
  • Compostable Energy Gel Wrappers: Brands like GU Energy and Clif are transitioning to eco-friendly packaging.
  • Recycled Hydration Packs: Made from repurposed plastic bottles (e.g., Salomon, CamelBak).

🌱 Recommended Accessories:

  • Hydrapak SpeedCup: Lightweight, collapsible, ideal for cupless races.
  • Salomon Active Skin 8 Set: Hydration vest made from recycled materials.
  • GU Energy Gels (Compostable): Eco-friendly, performance-focused nutrition.

📝 Pro Tip: Avoid single-use plastic bottles and disposable gels. Instead, use reusable containers and biodegradable wrappers.

🌿 How to Choose the Right Eco-Friendly Gear for Your Race

Selecting sustainable gear for ultramarathons doesn’t mean sacrificing performance. Here’s how to make eco-friendly choices that suit your running style:

✅ Consider Your Terrain and Conditions

  • Trail Races: Opt for durable, grippy shoes made from recycled materials.
  • Road Races: Lightweight, breathable shoes with carbon-neutral certification.
  • Multi-Day Events: Reusable hydration packs and eco-friendly energy gels.

✅ Prioritize Durable and Repairable Products

  • Look for brands that offer repair services (e.g., Vivobarefoot, Patagonia).
  • Choose versatile clothing that can be used in various conditions.

✅ Check for Sustainability Certifications

  • Carbon Neutral, Recycled Content, B Corp Certified.
  • Avoid greenwashing by researching brand sustainability policies.

🌿 The Impact of Choosing Sustainable Gear

By choosing eco-friendly running gear, you’re not just enhancing your own experience — you’re contributing to a healthier planet.

  • Carbon Emissions Reduced: Less energy consumed in manufacturing.
  • Plastic Waste Minimized: Recycled materials replace single-use plastics.
  • Circular Economy Supported: Repairable and recyclable gear promotes longevity.

Are you ready to take your sustainability commitment to the next level? Let’s explore how you can calculate and reduce your carbon footprint in running. 🚀

Cupless ultramarathon in 2025, runners using reusable silicone cups at a hydration station in a forest.

📌 5. Calculating and Reducing Your Carbon Footprint in Running

🌿 Understanding Your Carbon Footprint as an Ultramarathoner

A carbon footprint is the total amount of greenhouse gases (GHGs) produced directly or indirectly by an activity, measured in carbon dioxide equivalent (CO2e). For runners, the carbon footprint is influenced by several factors:

  • Travel: Flying to international races or driving long distances.
  • Gear Production: Manufacturing shoes, clothing, and accessories.
  • Event Organization: Energy use, waste generation, and logistics.
  • Nutrition: Production and packaging of energy gels, bars, and hydration.

In sustainable ultrarunning, minimizing your carbon footprint means making mindful choices in each of these areas.

🌿 Key Factors That Impact Your Running Carbon Footprint

✅ 1. Travel Emissions

  • Flights: One of the largest contributors to a runner’s carbon footprint. For example, a round-trip flight from New York to San Francisco produces approximately 1.2 tons of CO2e per person.
  • Car Travel: Driving to races also generates emissions. A 200 km road trip produces around 0.04 tons of CO2e.
  • Public Transport: Significantly reduces emissions, especially when using electric buses or trains.

🌍 Pro Tip: Prioritize local races to minimize travel-related emissions.

✅ 2. Gear Production and Disposal

  • Running Shoes: A pair of running shoes generates around 14 kg of CO2e during production. Brands like Allbirds and Vivobarefoot are reducing this through recycled materials.
  • Clothing: Polyester shirts and shorts are petroleum-based, contributing to higher emissions. Opt for recycled fabrics or organic cotton.
  • Accessories: Single-use plastic bottles, disposable gels, and non-recyclable hydration packs add to waste.

📝 Eco-Tip: Choose durable, repairable gear made from recycled or natural materials.

✅ 3. Event Organization and Logistics

  • Energy Consumption: Generators, lighting, and electronic timing systems can consume significant energy.
  • Waste Generation: Single-use plastics, paper cups, and race bibs create landfill waste.
  • Logistics: Transportation of race equipment and participants.

🌿 Sustainable Practices: Zero-waste policies, renewable energy for event setup, and digital race registration reduce the carbon footprint.

✅ 4. Nutrition and Hydration Choices

  • Energy Gels: Single-use plastic packaging is a major waste source. Choose compostable gel wrappers.
  • Hydration Systems: Avoid single-use plastic cups by using reusable silicone cups.
  • Local Food Options: Reduce emissions by consuming locally sourced food.

🌿 Example: GU Energy offers compostable wrappers for its gels, cutting down on plastic waste.

🌿 How to Calculate Your Carbon Footprint as a Runner

To truly embrace sustainability, you need to understand the impact of your choices. Follow these steps to calculate your carbon footprint:

✅ Step 1: Calculate Travel Emissions

  • Use a carbon footprint calculator (e.g., CarbonFootprint.com).
  • Enter the distance and mode of travel (flight, car, bus, train).
  • Example: A 500 km flight generates approximately 0.1 tons of CO2e.

✅ Step 2: Estimate Gear and Apparel Impact

  • Running shoes: ~14 kg CO2e per pair.
  • Clothing: ~5 kg CO2e per set (shirt + shorts).
  • Accessories: ~2 kg CO2e (hydration pack, reusable cup).

✅ Step 3: Factor in Event Organization

  • Estimate energy use (electricity, generators).
  • Calculate waste (number of cups, wrappers, discarded gear).
  • For zero-waste races, this may be significantly lower.

✅ Step 4: Include Nutrition and Hydration

  • Energy gels: ~0.01 kg CO2e per gel.
  • Hydration bottles: ~0.05 kg CO2e each.

✅ Example Carbon Footprint Calculation

  • Travel (car, 200 km round trip): 0.04 tons CO2e
  • Running shoes (one pair): 0.014 tons CO2e
  • Clothing (shirt + shorts): 0.005 tons CO2e
  • Event waste (plastic cups, gels): 0.002 tons CO2e
  • Total Carbon Footprint: 0.061 tons CO2e (61 kg CO2e)

🌿 Practical Ways to Reduce Your Running Carbon Footprint

✅ 1. Choose Local Races

  • Prioritize races within driving distance.
  • Use public transport or carpool to the race location.
  • Explore regional trails for independent ultrarunning adventures.

✅ 2. Use Eco-Friendly Gear

  • Opt for shoes made from recycled materials.
  • Choose clothing from brands with sustainable practices.
  • Invest in reusable hydration solutions (e.g., silicone cups, hydration packs).

✅ 3. Reduce Race-Day Waste

  • Participate in cupless races.
  • Carry your own reusable energy gel container.
  • Avoid disposable plastic bottles.

✅ 4. Offset Your Carbon Footprint

  • Donate to carbon offset projects (e.g., tree planting, renewable energy).
  • Some races offer carbon offset options for participants.

✅ 5. Embrace Virtual Races

  • Compete without traveling, reducing travel emissions to zero.
  • Support sustainable events that prioritize local participants.

🌿 Carbon Offset Programs for Runners

Carbon offset programs allow runners to neutralize their carbon emissions by supporting environmental projects. Here are some popular options:

  • Mossy Earth: Supports reforestation and wildlife conservation projects.
  • Cool Effect: Funds carbon reduction initiatives worldwide.
  • Carbonfund.org: A range of offset options, including renewable energy.

🌿 Example: Grandma’s Marathon offers participants the option to offset their travel emissions, supporting local forest conservation.

🌿 Are You Ready to Run Green?

Understanding your carbon footprint is the first step. Now, it’s time to make conscious choices that reduce your environmental impact. As you explore sustainable gear, cupless races, and local events, you become part of a global movement of eco-conscious runners.

Ready to take the next step? Let’s explore how local races can further minimize your carbon footprint. 🚀

Eco-friendly running shoes made from recycled materials for sustainable ultramarathons, 2025.

📌 6. The Importance of Choosing Local Races for Sustainability

🌿 Why Local Races Are More Sustainable

Local races offer a powerful way for runners to minimize their environmental impact. By participating in events close to home, you can significantly reduce travel emissions, support regional economies, and embrace a more eco-conscious approach to ultrarunning.

  • Reduced Travel Emissions: No need for long-distance flights or road trips.
  • Community Support: Race fees directly benefit local businesses.
  • Environmental Protection: Less infrastructure and waste from international logistics.

🌱 Example: A local 50K trail race can have a carbon footprint of just 0.1 tons of CO2e, compared to 4.3 tons for an international race.

🌿 How Local Races Benefit the Environment

Choosing local races is one of the most effective ways to reduce your carbon footprint. Here’s why:

✅ 1. Lower Travel Emissions

  • No need for flights or long road trips.
  • Biking or carpooling to the race site further reduces emissions.
  • Public transport can be a sustainable option for urban events.

✅ 2. Minimal Resource Use

  • Local races require fewer logistics, reducing the need for transportation of race equipment and supplies.
  • Smaller race sizes mean less waste generation.

✅ 3. Community Engagement

  • Local races support regional businesses, from hotels and restaurants to gear shops.
  • Local volunteers help with race organization, strengthening community ties.

🌿 Finding Local Sustainable Ultramarathons

If you’re ready to prioritize sustainability, here’s how to find eco-friendly local races:

✅ 1. Search Regional Race Calendars

  • Local running clubs and race organizations often list upcoming events.
  • Check your city’s parks and recreation website for trail races.

✅ 2. Use Eco-Friendly Race Directories

  • Happy Planet Running: A directory of zero-waste races.
  • UltraSignup: Find local trail and ultramarathon events.
  • Trail Runner Magazine: Lists sustainable races globally.

✅ 3. Prioritize Eco-Conscious Race Organizers

  • Look for races that promote zero-waste, cupless, or carbon offset options.
  • Examples: SF Marathon (zero-waste), Trail Marathon (cupless), High Lonesome 100 (carbon offset).

🌿 How to Make Your Local Race More Sustainable

If you’re an organizer or volunteer, you can enhance the sustainability of your local race:

✅ 1. Choose a Natural, Accessible Location

  • Avoid sensitive ecosystems to minimize environmental damage.
  • Select a site accessible by public transport.

✅ 2. Implement Cupless Hydration Stations

  • Encourage runners to bring their own reusable cups.
  • Provide water stations with refillable options.

✅ 3. Promote Carpooling and Public Transport

  • Offer incentives for runners who use sustainable transport.
  • Provide clear directions for public transport options.

✅ 4. Use Eco-Friendly Race Gear

  • Compostable bibs, reusable medals, and recycled race shirts.
  • Source race supplies from local, eco-conscious vendors.

✅ 5. Partner with Local Environmental Groups

  • Collaborate on waste management and conservation projects.
  • Donate part of the race fees to local conservation efforts.

🌿 Top Local Sustainable Ultramarathons (2025)

Looking for a local race that aligns with your eco-conscious values? Here are some of the best sustainable local ultramarathons:

  • High Lonesome 100 (Colorado, USA): A pioneer in cupless racing and carbon offset initiatives.
  • SF Marathon (San Francisco, USA): Zero-waste policies, local vendor partnerships, and public transport options.
  • Miwok 100K (California, USA): Long-standing sustainability focus with waste reduction and community support.
  • Waldo 100K (Oregon, USA): Carbon offset through Trail to Zero program.
  • Trail Marathon (USA): Strict zero-waste policies, including composting and recycling.

🌿 Benefits of Supporting Local Races

By choosing local sustainable races, you’re not just minimizing your environmental impact — you’re also making a positive difference for your community.

  • Reduced Carbon Footprint: Minimal travel emissions.
  • Local Economic Support: Race fees benefit regional businesses.
  • Community Engagement: Connect with local runners, volunteers, and organizations.
  • Conservation Impact: Some races directly support local environmental initiatives.

🌱 Example: The SF Marathon partners with local conservation groups to offset its environmental impact, ensuring that race fees support sustainability.

🌿 Transitioning to a Local Race Mindset

Switching to local races is easier than you think. Follow these tips to become a local ultrarunning champion:

✅ 1. Set a Local Race Goal

  • Choose a local trail, park, or city event for your next ultramarathon.
  • Train on local trails to reduce your travel carbon footprint even further.

✅ 2. Encourage Friends to Join

  • Make it a community event by inviting friends and fellow runners.
  • Carpool or cycle together to the race location.

✅ 3. Support Local Businesses

  • Buy gear, nutrition, and accessories from local shops.
  • Stay in locally-owned accommodations if traveling.

✅ 4. Spread Awareness

  • Share your local race experience on social media.
  • Highlight the sustainability benefits of staying local.

🌿 Are Local Races Always Better?

While local races are generally more sustainable, not all are eco-friendly. Some may still rely on single-use plastics, wasteful practices, or high-carbon logistics. To ensure your local race is truly sustainable:

  • Look for races with zero-waste or cupless policies.
  • Prioritize events that support local conservation.
  • Avoid races that heavily promote single-use products.

📝 Pro Tip: Contact the race organizers to ask about their sustainability policies before registering.

🌿 Ready to Go Local and Sustainable?

Local races offer a perfect balance of sustainability and adventure. They allow you to enjoy the thrill of ultrarunning while supporting your community and protecting the environment.

But sustainability doesn’t stop at choosing a race. In the next section, let’s explore the top sustainable ultramarathons around the world in 2025. 🚀

📌 7. Top Sustainable Ultramarathons in 2025

🌿 What Makes an Ultramarathon Truly Sustainable?

A sustainable ultramarathon is defined by its commitment to reducing environmental impact, promoting ethical practices, and supporting local communities. But which races are leading the way in 2025? Here are the most eco-friendly ultramarathons you can join this year.

🌿 Criteria for Selecting Sustainable Ultramarathons

To identify the most sustainable ultramarathons, we considered several factors:

  • Cupless Policies: Races that eliminate single-use plastic cups.
  • Eco-Friendly Gear Requirements: Encouraging runners to use recycled or renewable materials.
  • Carbon Offset Programs: Offering participants options to neutralize their travel emissions.
  • Zero-Waste Management: Effective recycling, composting, and waste reduction.
  • Local Community Support: Partnerships with local vendors and conservation groups.

🌿 Top 10 Sustainable Ultramarathons in 2025

✅ 1. High Lonesome 100 (Colorado, USA)

  • Sustainability Highlights: Cupless race, carbon offset program, local trail preservation.
  • Why It Stands Out: One of the first ultramarathons to adopt a cupless format, promoting zero waste.
  • Additional Features: Scenic mountain trails, eco-conscious race management.

✅ 2. SF Marathon (San Francisco, USA)

  • Sustainability Highlights: Zero-waste policy, local conservation partnerships, public transport options.
  • Why It Stands Out: Extensive waste reduction efforts, including composting and recycling stations.
  • Additional Features: Urban race with coastal views, strong community involvement.

✅ 3. Miwok 100K (California, USA)

  • Sustainability Highlights: Long-standing zero-waste practices, composting stations, and local volunteers.
  • Why It Stands Out: One of the most respected sustainable races in the US.
  • Additional Features: Scenic trails through Marin Headlands.

✅ 4. Trail Marathon (USA)

  • Sustainability Highlights: Cupless format, compostable race bibs, zero-waste policy.
  • Why It Stands Out: A pioneer in zero-waste ultramarathons, with strict environmental guidelines.
  • Additional Features: Technical trail routes, education on sustainable running.

✅ 5. Ultra X Jordan (Wadi Rum, Jordan)

  • Sustainability Highlights: Carbon offset for participant travel, eco-friendly race supplies.
  • Why It Stands Out: Stunning desert landscapes with minimal environmental impact.
  • Additional Features: Remote, scenic route through Wadi Rum’s red sand dunes.

✅ 6. Waldo 100K (Oregon, USA)

  • Sustainability Highlights: Carbon offset program (Trail to Zero), local volunteers, cupless race.
  • Why It Stands Out: Carbon offset program specifically designed for trail runners.
  • Additional Features: Lush forest trails and challenging mountain terrain.

✅ 7. Ultra X Mexico (Copper Canyon, Mexico)

  • Sustainability Highlights: Carbon-neutral event, local indigenous support, sustainable trail management.
  • Why It Stands Out: Collaboration with local communities for race logistics.
  • Additional Features: Scenic canyons, cultural immersion experience.

✅ 8. Grand Circle Trailfest (Utah, USA)

  • Sustainability Highlights: Zero-waste event, recycling stations, compostable race supplies.
  • Why It Stands Out: Focus on waste reduction and local conservation.
  • Additional Features: Multi-day event with stunning desert landscapes.

✅ 9. Mont Blanc Ultra (France/Italy/Switzerland)

  • Sustainability Highlights: Strict waste management, renewable energy for race operations.
  • Why It Stands Out: Europe’s most iconic ultra with a commitment to eco-friendly practices.
  • Additional Features: Stunning alpine scenery, international route.

✅ 10. Patagonia Ultra (Chile)

  • Sustainability Highlights: Carbon offset program, zero-waste policy, local environmental partnerships.
  • Why It Stands Out: Race fees support local conservation projects in Patagonia.
  • Additional Features: Epic views of glaciers, mountains, and wild forests.

🌿 Special Mention: Virtual Sustainable Ultramarathons

If you cannot attend a local or international race, virtual sustainable ultramarathons offer an eco-conscious alternative:

  • Ultra X Virtual Series: Carbon offset options for participants.
  • Happy Planet Running Virtual Races: Zero-waste events with digital race bibs.
  • TerraXplore Virtual Challenge: Eco-friendly medals shipped in compostable packaging.

🌿 How to Choose the Right Sustainable Ultramarathon for You

Selecting an eco-friendly race doesn’t mean sacrificing excitement or adventure. Here’s how to make the best choice:

✅ 1. Prioritize Cupless Races

  • Races without single-use plastic cups significantly reduce waste.
  • Make sure you are prepared with a reusable hydration solution.

✅ 2. Look for Carbon Offset Options

  • Choose races that offer carbon offset for travel.
  • Some races automatically offset all participant emissions.

✅ 3. Support Local or Regional Events

  • Reduce your travel emissions by choosing a race close to home.
  • Local races often support regional conservation efforts.

✅ 4. Check the Race’s Sustainability Policies

  • Visit the race website for details on their zero-waste, recycling, and sustainability programs.
  • Contact organizers for further information.

🌿 What to Expect from a Sustainable Ultramarathon

Running a sustainable ultramarathon may differ slightly from traditional events, but the experience is equally rewarding:

  • Reusable Hydration: Carry your own water bottle or silicone cup.
  • Compostable Nutrition: Bring your own energy gels or choose brands with compostable packaging.
  • Eco-Friendly Gear: Wear shoes and apparel made from recycled materials.
  • Educational Initiatives: Some races include sustainability workshops.

🌿 Preparing for Your First Sustainable Ultramarathon

Ready to run a sustainable race? Here’s how to get started:

✅ Gear Checklist

  • Eco-friendly running shoes (Allbirds, Vivobarefoot).
  • Recycled apparel (Patagonia, Sundried).
  • Reusable hydration container (Hydrapak SpeedCup).
  • Compostable energy gels (GU, Clif).

✅ Sustainability Mindset

  • Plan your travel to minimize carbon emissions.
  • Respect nature and stay on marked trails.
  • Dispose of waste responsibly.

✅ Spread the Word

  • Share your sustainable running experience on social media.
  • Encourage friends to choose eco-friendly races.

🌿 Want to Make a Difference? Start Your Own Sustainable Ultramarathon

If you are passionate about sustainability, why not organize your own eco-friendly race? Here’s how:

  • Cupless Setup: Require participants to bring their own hydration.
  • Zero-Waste Policies: Provide recycling, composting, and digital race registration.
  • Carbon Offset Partnership: Offer participants the option to neutralize their travel emissions.
  • Local Vendors: Source race gear and supplies from regional businesses.
  • Education and Awareness: Host sustainability workshops or talks.

🌿 Ready to Join a Sustainable Ultramarathon?

Sustainable ultramarathons are more than just races — they are a commitment to protecting the planet while pursuing your passion. Whether you choose a local trail run, a virtual race, or an international eco-friendly adventure, you’re making a positive impact.

Next, let’s dive into the best sustainable ultramarathon products and brands to help you prepare for your eco-conscious journey. 🚀

Sustainable ultramarathon with reusable water bottles in a mountain setting, 2025.

📌 8. Sustainable Ultramarathon Products and Brands

🌿 Why Choose Sustainable Products for Ultramarathons?

Sustainable ultramarathon products minimize environmental impact without sacrificing performance. From eco-friendly running shoes to compostable energy gels, choosing sustainable gear is a powerful way for runners to protect the planet while pursuing their passion.

  • Lower Carbon Footprint: Recycled and renewable materials reduce emissions.
  • Waste Reduction: Compostable and reusable products minimize landfill waste.
  • Ethical Production: Brands prioritize fair labor practices and eco-conscious manufacturing.

🌿 Top Sustainable Running Shoe Brands for Ultramarathons

✅ 1. Allbirds

  • Sustainability Features: Carbon-neutral shoes made from natural materials like merino wool, eucalyptus, and sugarcane.
  • Popular Model: Tree Dasher 2 – Lightweight, breathable, and eco-friendly.
  • Why It Stands Out: Certified carbon-neutral with a commitment to regenerative agriculture.

✅ 2. Vivobarefoot

  • Sustainability Features: Recycled plastics, plant-based materials, and a repair program (Revivo) that extends shoe life.
  • Popular Model: Primus Trail II All-Weather – Durable, minimalist, and eco-conscious.
  • Why It Stands Out: Pioneers in minimalist, sustainable footwear with a focus on circular economy.

✅ 3. Merrell

  • Sustainability Features: Recycled fabrics, eco-friendly rubber, and trail shoes built for durability.
  • Popular Model: Moab Flight – Eco-friendly upper made from recycled mesh.
  • Why It Stands Out: Combines sustainability with performance for rugged trail conditions.

✅ 4. On Running

  • Sustainability Features: Circular design with fully recyclable shoes and renewable energy in manufacturing.
  • Popular Model: Cloudneo – A subscription-based, fully recyclable running shoe.
  • Why It Stands Out: Innovation in circular economy with a subscription model for eco-conscious runners.

✅ 5. Brooks

  • Sustainability Features: Recycled materials, carbon-neutral product lines, and durable designs.
  • Popular Model: Ghost 15 – Lightweight, cushioned, and partially made from recycled plastic.
  • Why It Stands Out: A mainstream brand embracing sustainability without compromising performance.

🌿 Best Eco-Friendly Running Apparel Brands

✅ 1. Patagonia

  • Sustainability Features: Recycled polyester, organic cotton, and Fair Trade-certified manufacturing.
  • Popular Product: Capilene Cool Trail Shirt – 100% recycled polyester, moisture-wicking.
  • Why It Stands Out: Industry leader in environmental responsibility with transparent supply chain.

✅ 2. Cotopaxi

  • Sustainability Features: Eco-friendly materials, repurposed fabrics, and ethical sourcing.
  • Popular Product: Teca Windbreaker – Made from leftover fabric, durable, and stylish.
  • Why It Stands Out: Known for vibrant colors and a strong commitment to sustainability.

✅ 3. Sundried

  • Sustainability Features: Recycled plastic bottles turned into moisture-wicking performance fabric.
  • Popular Product: Sundried Performance Leggings – Comfortable, durable, and eco-conscious.
  • Why It Stands Out: Certified carbon-neutral with a focus on ethical production.

✅ 4. BAM (Bamboo Clothing)

  • Sustainability Features: Bamboo fabric, which is naturally breathable, antibacterial, and biodegradable.
  • Popular Product: BAM Bamboo T-Shirt – Soft, comfortable, and perfect for long runs.
  • Why It Stands Out: Bamboo is a fast-growing, renewable resource.

✅ 5. Girlfriend Collective

  • Sustainability Features: Recycled plastic bottles, fishing nets, and eco-friendly dyes.
  • Popular Product: Compressive High-Rise Leggings – Comfortable, supportive, and sustainable.
  • Why It Stands Out: Transparent about their sustainability practices and supply chain.

🌿 Eco-Friendly Running Accessories for Ultramarathons

✅ 1. Reusable Hydration Solutions

  • Hydrapak SpeedCup: Lightweight, collapsible, perfect for cupless races.
  • CamelBak Recycled Hydration Packs: Made from repurposed plastic bottles.
  • Salomon Soft Flask: Reusable, compact, and BPA-free.

✅ 2. Sustainable Nutrition and Energy Gels

  • GU Energy Labs: Compostable gel wrappers for reduced plastic waste.
  • Spring Energy: Real food-based gels in compostable packaging.
  • Clif Bar: Organic, plant-based energy bars with recycled packaging.

✅ 3. Zero-Waste Race Essentials

  • Compostable Race Bibs: Made from recycled paper or biodegradable materials.
  • Reusable Medals: Made from recycled metals or natural wood.
  • Digital Race Registration: Paperless, reducing waste and energy consumption.

🌿 Sustainable Ultramarathon Gear: Must-Haves

✅ Footwear

  • Choose carbon-neutral, recycled, or plant-based shoes (Allbirds, Vivobarefoot).
  • Look for durable models that can be repaired or recycled.

✅ Clothing

  • Opt for recycled polyester, organic cotton, or bamboo (Patagonia, BAM).
  • Prioritize brands with Fair Trade and carbon-neutral certifications.

✅ Hydration and Nutrition

✅ Accessories

  • Recycled backpacks, running vests, and waist packs.
  • Compostable rain ponchos for wet weather races.

🌿 Best Sustainable Running Gear for Different Conditions

✅ For Trail Races

  • Shoes: Vivobarefoot Primus Trail II or Merrell Moab Flight.
  • Clothing: Patagonia Capilene Cool Trail Shirt, Cotopaxi Teca Windbreaker.
  • Hydration: Hydrapak SpeedCup, Salomon Soft Flask.

✅ For Road Races

  • Shoes: Allbirds Tree Dasher 2 or Brooks Ghost 15.
  • Clothing: Sundried Performance Leggings, BAM Bamboo T-Shirt.
  • Nutrition: GU Energy Compostable Gels, Spring Energy.

✅ For Ultra-Distance Events

  • Shoes: On Cloudneo (recyclable subscription model).
  • Clothing: Girlfriend Collective High-Rise Leggings.
  • Hydration: CamelBak Recycled Hydration Pack.

🌿 How to Identify Truly Sustainable Running Gear

The market is full of products labeled as “eco-friendly” — but how can you separate genuine sustainability from greenwashing? Use this checklist:

✅ 1. Check for Certifications

  • Carbon Neutral, B Corp Certified, Fair Trade, Recycled Content.

✅ 2. Research the Brand’s Sustainability Practices

  • Visit the brand’s website for details on their eco-commitment.
  • Look for transparency in their supply chain.

✅ 3. Prioritize Recycled or Renewable Materials

  • Recycled polyester, organic cotton, bamboo, and plant-based materials.

✅ 4. Choose Repairable or Recyclable Products

  • Shoes that can be resoled (Vivobarefoot, On Cloudneo).
  • Clothing with durable stitching and repair options.

🌿 Ready to Gear Up for a Sustainable Race?

By choosing sustainable gear, you’re not just running green — you’re becoming part of a global movement toward eco-conscious sports.

📌 9. Challenges and Solutions in Sustainable Ultramarathoning

🌿 Why Are Sustainable Ultramarathons Challenging to Organize?

While the concept of sustainable ultramarathons is inspiring, implementing eco-friendly practices can be complex. Race organizers face various logistical, financial, and educational challenges when attempting to minimize their event’s environmental impact.

  • Logistical Challenges: Managing waste, ensuring hydration without single-use cups, and sourcing sustainable gear.
  • Financial Challenges: Sustainable products and services can be more expensive.
  • Education Challenges: Runners and volunteers may not be familiar with eco-friendly practices.

But despite these obstacles, sustainable ultramarathons are not only possible — they are becoming more popular.

🌿 Key Challenges in Organizing a Sustainable Ultramarathon

✅ 1. Implementing Cupless Races

  • Challenge: Runners may be unfamiliar with carrying their own hydration.
  • Solution: Provide clear instructions on reusable hydration options and offer reusable silicone cups for purchase.

🌱 Example: High Lonesome 100, a cupless race since 2017, offers hydration guidelines and encourages runners to bring collapsible silicone cups.

✅ 2. Managing Waste Efficiently

  • Challenge: Single-use items (cups, wrappers, race bibs) generate significant waste.
  • Solution: Adopt a zero-waste policy:
    • Provide recycling and composting stations at aid stations.
    • Use compostable race bibs and eco-friendly medals.
    • Ban single-use plastics (cups, utensils).

🌱 Example: The Trail Marathon has a strict zero-waste policy, using compostable cups and recycled race shirts.

✅ 3. Providing Sustainable Gear Options

  • Challenge: Sourcing eco-friendly race shirts, medals, and participant kits can be costly.
  • Solution: Partner with sustainable brands for race gear (Patagonia, Sundried).
  • Alternative: Offer participants the option to decline race shirts for a discount.

🌱 Example: SF Marathon offers participants the choice to opt out of receiving a race shirt, reducing unnecessary clothing production.

✅ 4. Managing Carbon Emissions

  • Challenge: Travel by participants can generate a significant carbon footprint.
  • Solution: Offer carbon offset options for participants and promote local races.
  • Alternative: Provide incentives for carpooling or using public transport.

🌱 Example: Grandma’s Marathon offers carbon offset options for participants, supporting local reforestation projects.

✅ 5. Educating Participants and Volunteers

  • Challenge: Many runners may not be familiar with sustainable practices.
  • Solution: Use digital race guides, pre-race emails, and social media to educate participants.
  • Alternative: Organize a pre-race sustainability briefing.

🌱 Example: Waldo 100K includes sustainability tips in its pre-race briefing, helping runners understand the zero-waste policy.

✅ 6. Ensuring Safety Without Sacrificing Sustainability

  • Challenge: Safety can sometimes conflict with eco-friendly practices (e.g., hydration in remote areas).
  • Solution: Provide well-marked hydration stations with refill options.
  • Alternative: Use reusable emergency blankets instead of single-use foil blankets.

🌱 Example: Miwok 100K provides reusable emergency blankets and encourages runners to carry their own hydration.

🌿 Balancing Cost and Sustainability

One of the most common concerns for organizers is the cost of sustainable options:

  • Sustainable Race Gear: Eco-friendly shirts, medals, and bibs can be more expensive.
  • Zero-Waste Logistics: Compostable cups, recycling bins, and digital registration systems may increase costs.
  • Renewable Energy: Solar-powered timing systems and sustainable lighting may require an initial investment.

✅ Solutions:

  • Offer participants the option to purchase eco-friendly merchandise rather than including it in the registration fee.
  • Partner with eco-conscious brands for sponsorship (e.g., Patagonia, Hydrapak).
  • Provide a digital registration option to save on printing costs.

🌱 Example: Ultra X Series partners with Mossy Earth to offset participant carbon emissions, providing an eco-friendly experience without significant cost increases.

🌿 Addressing Runner Resistance to Sustainable Practices

Some runners may be hesitant to embrace sustainable practices, especially if they are unfamiliar with cupless races or reusable gear.

✅ Solutions:

  • Provide detailed pre-race instructions and tutorials on using reusable hydration systems.
  • Offer reusable cups for sale at a discount.
  • Share educational content on social media to raise awareness.

🌱 Example: Happy Planet Running promotes sustainable race practices through blog posts and social media, educating runners year-round.

🌿 Preventing “Greenwashing” in Sustainable Races

“Greenwashing” occurs when a race claims to be sustainable without actually following through on eco-friendly practices. This can damage trust and credibility.

✅ Solutions:

  • Be transparent about sustainability efforts on the race website.
  • Publish a post-race sustainability report showing waste reduction, carbon offsetting, and other initiatives.
  • Use third-party certifications (Carbon Neutral, Zero-Waste) for credibility.

🌱 Example: The SF Marathon publishes an annual sustainability report detailing its zero-waste achievements.

🌿 Creative Solutions for Sustainable Ultramarathons

✅ 1. Digital Race Bibs and Registration

  • Save paper by using digital bibs and email registration.
  • Provide a mobile app for race information and tracking.

✅ 2. Virtual Races with a Sustainability Focus

  • Offer virtual race options with carbon offset for shipping medals.
  • Use compostable packaging for race medals and shirts.

✅ 3. Circular Economy for Race Gear

  • Offer a gear recycling program for participants (shoes, clothing).
  • Use reusable race signage instead of disposable banners.

✅ 4. Reward Sustainable Runners

  • Offer a “Green Runner” badge for participants who choose carbon offset, reusable hydration, or digital registration.
  • Provide discounts for runners who complete the race with zero waste.

🌱 Example: Ultra X Virtual Series offers carbon offset options for all participants, with a “Green Runner” badge for those who participate sustainably.

🌿 The Future of Sustainable Ultramarathons

Despite the challenges, the future of sustainable ultramarathons is bright:

  • More races are adopting zero-waste and cupless policies.
  • Sustainable gear options are expanding, with major brands embracing eco-friendly practices.
  • Carbon offset programs are becoming a standard feature for major races.
  • Educational initiatives are raising awareness among runners.

As more race organizers and participants embrace sustainability, ultramarathons can become a leading example of how sports can protect the planet.

📌 10. How to Organize a Sustainable Ultramarathon

🌿 Why Organize a Sustainable Ultramarathon?

Organizing a sustainable ultramarathon is about more than just reducing your environmental impact — it’s about setting an example for the running community, protecting the natural landscapes where races are held, and creating a positive, eco-conscious experience for participants.

  • Environmental Impact Reduction: Minimize waste, reduce carbon emissions, and protect natural trails.
  • Community Engagement: Support local businesses, conservation efforts, and volunteers.
  • Enhanced Runner Experience: Eco-conscious runners are increasingly choosing sustainable races.

🌿 Step-by-Step Guide to Organizing a Sustainable Ultramarathon

✅ Step 1: Define Your Sustainability Goals

  • Determine the key sustainability aspects you want to focus on (zero-waste, carbon offset, local sourcing).
  • Set measurable goals, such as “Zero single-use plastic” or “Offset 100% of participant travel emissions.”

🌱 Example Goal: High Lonesome 100 aims for zero-waste with a strict cupless policy.

✅ Step 2: Choose an Eco-Friendly Race Location

  • Select a route that minimizes environmental disruption (existing trails, parks).
  • Avoid sensitive ecosystems or protected areas.
  • Partner with local conservation groups for trail maintenance.

🌱 Example: Miwok 100K runs through existing park trails, minimizing environmental impact.

✅ Step 3: Implement Cupless Hydration Stations

  • Eliminate single-use plastic cups entirely.
  • Require participants to carry their own reusable hydration containers (silicone cups, soft flasks).
  • Provide refill stations with water and electrolytes.

🌱 Recommended Products: Hydrapak SpeedCup, Salomon Soft Flask, CamelBak Recycled Hydration Packs.

✅ Step 4: Use Sustainable Race Gear

  • Offer race shirts made from recycled polyester, organic cotton, or bamboo.
  • Use eco-friendly race bibs (compostable or recycled paper).
  • Opt for reusable, recycled, or natural medals (wood, recycled metal).

🌱 Example: SF Marathon offers an optional shirt for runners who prefer not to receive one, reducing clothing waste.

✅ Step 5: Manage Waste Efficiently

  • Set up recycling, composting, and general waste bins at all aid stations.
  • Use compostable food packaging and utensils.
  • Partner with local waste management services for proper disposal.

🌱 Example: The Trail Marathon uses compostable cups, composting stations, and clear recycling bins.

✅ Step 6: Offer Sustainable Nutrition Options

  • Provide eco-friendly energy gels (compostable packaging).
  • Use locally sourced, plant-based foods for aid stations.
  • Offer vegan and organic options for post-race meals.

🌱 Recommended Brands: GU Energy (compostable gels), Spring Energy (real food, compostable packaging).

✅ Step 7: Implement a Carbon Offset Program

  • Calculate the carbon footprint of the event (travel, energy use, waste).
  • Offer participants the option to offset their travel emissions.
  • Invest in verified carbon offset projects (reforestation, renewable energy).

🌱 Example: Grandma’s Marathon offers carbon offset options for participants, supporting local forest conservation.

✅ Step 8: Partner with Eco-Conscious Sponsors

  • Collaborate with brands that prioritize sustainability (Patagonia, Hydrapak, Cotopaxi).
  • Ensure sponsors align with your sustainability goals.
  • Avoid partnerships with companies that use single-use plastics or have poor environmental records.

🌱 Example: Ultra X partners with Mossy Earth for carbon offset, aligning with their eco-conscious brand.

✅ Step 9: Provide Digital Race Registration and Bibs

  • Use an online registration platform instead of paper forms.
  • Offer digital race bibs (runners can print if they choose).
  • Use a mobile app for race information, route maps, and updates.

🌱 Example: Happy Planet Running uses digital bibs and online race tracking, saving paper.

✅ Step 10: Educate Participants on Sustainability

  • Send pre-race emails explaining your sustainability practices.
  • Include a section in the race guide about eco-friendly runner behavior.
  • Use social media to raise awareness and promote sustainability.

🌱 Example: Waldo 100K includes a sustainability section in their race guide, with tips for zero-waste running.

🌿 Advanced Sustainable Race Management Strategies

✅ 1. Renewable Energy for Race Operations

  • Use solar-powered generators for aid stations and timing systems.
  • Choose a location with existing renewable energy infrastructure.
  • Explore portable solar panels for remote aid stations.

🌱 Example: Carlsbad Marathon uses solar-powered composting facilities.

✅ 2. Zero-Waste Merchandise and Swag

  • Offer sustainable race shirts (recycled polyester, organic cotton).
  • Provide reusable tote bags instead of plastic swag bags.
  • Use natural wood, recycled metal, or no medals for finishers.

🌱 Example: Patagonia Ultra offers recycled fabric race shirts and wooden medals.

✅ 3. Sustainable Transportation Options

  • Encourage participants to use public transport, carpool, or cycle to the event.
  • Offer a shuttle service powered by electric vehicles for remote locations.
  • Use a parking reservation system to reduce congestion and emissions.

🌱 Example: SF Marathon promotes public transport and provides shuttle options for runners.

✅ 4. Local Community Involvement

  • Hire local vendors for race supplies (catering, gear).
  • Collaborate with local conservation groups for trail maintenance.
  • Offer discounted entries for local runners.

🌱 Example: Miwok 100K partners with local conservation groups to maintain trail quality.

✅ 5. Post-Race Sustainability Reporting

  • Publish a post-race sustainability report showing your waste reduction, carbon offset, and eco-friendly practices.
  • Include data on the amount of waste recycled, carbon offset, and any conservation donations.

🌱 Example: The SF Marathon publishes an annual sustainability report.

🌿 How to Calculate Your Race’s Carbon Footprint

  • Calculate travel emissions for all participants (average distance traveled).
  • Include energy consumption (generators, race timing systems).
  • Factor in waste generation (cups, wrappers, discarded gear).
  • Use a carbon calculator (CarbonFootprint.com, CoolEffect) for accuracy.

🌿 Sample Carbon Calculation for a Sustainable Ultramarathon

  • Travel (500 participants, average 100 km each): 0.05 tons CO2e per runner.
  • Energy Use (solar-powered timing, minimal generator use): 0.01 tons CO2e.
  • Waste (compostable cups, recycling stations): 0.005 tons CO2e.
  • Total Carbon Footprint: 26.5 tons CO2e.

✅ Carbon Offset Solution:

  • Plant 500 trees through Mossy Earth (1 tree = ~0.03 tons CO2e).
  • Fund a renewable energy project in a developing country.

🌿 Ready to Organize Your Sustainable Ultramarathon?

Creating a sustainable ultramarathon is about making mindful choices that protect the environment, support local communities, and inspire runners.

❓ Frequently Asked Questions

🌱 What is a sustainable ultramarathon?

A sustainable ultramarathon is an endurance race designed to minimize its environmental impact through eco-friendly practices such as cupless hydration, carbon offset programs, recycled gear, and zero-waste management.

🌱 How do cupless ultramarathons work?

In cupless ultramarathons, participants must bring their own reusable hydration containers, such as silicone cups, soft flasks, or hydration vests. There are no single-use plastic cups at aid stations.

🌱 Are sustainable ultramarathons more expensive for runners?

Not necessarily. While sustainable races may offer eco-friendly gear or carbon offset options, these are often optional. Some sustainable races may even be more affordable by reducing waste and unnecessary gear.

🌱 What is a carbon offset program for a race?

A carbon offset program allows runners to neutralize the carbon emissions associated with their travel by supporting environmental projects, such as reforestation or renewable energy initiatives.

🌱 Which are the best eco-friendly running shoes for ultramarathons?

Top eco-friendly running shoe brands include Allbirds (carbon-neutral), Vivobarefoot (recycled materials), Merrell (recycled upper mesh), and On Running (recyclable shoes).

🌱 How can I calculate my carbon footprint as a runner?

You can calculate your carbon footprint by considering travel emissions, gear production, event organization, and nutrition packaging. Online carbon calculators like CarbonFootprint.com can help.

🌱 Are all zero-waste races also sustainable?

Not necessarily. While zero-waste races minimize landfill waste, true sustainability also includes carbon offset, eco-friendly gear, and local community support.

🌱 Can I still get a race shirt in a sustainable ultramarathon?

Many sustainable races offer eco-friendly shirts made from recycled materials or allow runners to opt out of receiving a shirt to reduce waste.

🌱 How can I offset my travel emissions for a race?

You can calculate your travel emissions and donate to verified carbon offset programs like Mossy Earth, Cool Effect, or Carbonfund.org.

🌱 Can I participate in a sustainable ultramarathon as a beginner?

Absolutely. Sustainable races are open to runners of all experience levels. Just ensure you are familiar with cupless hydration and eco-friendly gear.

🌍 Inspiring Videos: Sustainable Ultramarathons

Sustainability in Trail Running
Discover the importance of sustainability in trail running, featuring practical tips and inspiring stories for eco-conscious runners.

Top 5 Easy Ways to Be a Greener, More Sustainable Runner
Running coach Damian Hall shares five simple strategies to reduce your environmental impact as a runner.

Desert Ultra | An Ultra Running Documentary
Experience the challenge of running a sustainable ultramarathon in the desert, where minimal impact is key.

I Ran a BRUTAL Ultra Marathon in Mongolia
Follow the journey of a runner tackling a brutal ultramarathon in Mongolia with a focus on sustainability and adventure.

📚 Books on Sustainable Ultramarathon Running

  1. Eat & Run: My Unlikely Journey to Ultramarathon Greatness by Scott Jurek
    An inspiring memoir by ultramarathoner Scott Jurek, detailing his transition to a plant-based diet and its impact on his endurance running career. The book combines personal stories with practical advice on nutrition and training.
  2. Becoming a Sustainable Runner by Tina Muir and Zoë Rom
    This guide offers actionable steps for runners to make environmentally conscious choices, covering topics from eco-friendly gear to community engagement in sustainability efforts.
  3. The Longest Race: A Lifelong Runner, an Iconic Ultramarathon, and the Case for Human Endurance by Ed Ayres
    Ed Ayres explores the intersection of endurance running and environmental sustainability, reflecting on his experiences in ultramarathons and advocating for a more sustainable approach to the sport.

📄 Scientific Articles on Sustainability in Ultramarathons

  1. Assessing the Ecological Impact of Ultramarathon Events in Protected Natural Areas
    This study examines the environmental effects of ultramarathon events held in protected areas, using the Le Grand Raid Réunion as a case study to highlight the importance of sustainable event planning.
  2. Sustainable Food Support during an Ultra-Endurance and Environmentally Friendly Event
    A case study focusing on sustainable dietary practices during ultra-endurance events, emphasizing the role of mindful nutrition in reducing environmental degradation.
  3. Keep It Green for Generations to Come: Trail Running Events and the Impact on the Environment
    This article discusses the relationship between trail running events and environmental sustainability, offering insights into how values shape the sport industry and the importance of ethical decision-making.

🌐 Further Reading on Sustainable Ultramarathons

📌 Recommended Internal Articles

🌐 Recommended External Articles

✅ Sustainable Ultramarathon Quiz

🌱 Test Your Knowledge

  1. Which of the following is a key characteristic of a sustainable ultramarathon?
    • A. Single-use plastic cups
    • B. Cupless hydration stations
    • C. Unlimited waste generation
    • D. Disposable gear for runners
  2. What type of running gear is considered eco-friendly?
    • A. Plastic shoes
    • B. Non-recyclable clothing
    • C. Recycled polyester apparel
    • D. Single-use rain ponchos
  3. How can runners reduce their carbon footprint during a race?
    • A. Flying to international races
    • B. Choosing local races
    • C. Buying single-use gear
    • D. Using plastic water bottles
  4. What is the purpose of a carbon offset program in ultramarathons?
    • A. To provide extra medals
    • B. To offset race registration fees
    • C. To neutralize carbon emissions from travel
    • D. To offer discounts on gear
  5. Which of these is an example of sustainable nutrition for ultrarunners?
    • A. Plastic-wrapped candy bars
    • B. Compostable energy gel wrappers
    • C. Single-use water bottles
    • D. Non-recyclable packaging
  6. How do cupless ultramarathons help reduce waste?
    • A. Offering unlimited plastic cups
    • B. Providing reusable silicone cups for runners
    • C. Using paper cups only
    • D. Allowing runners to litter freely
  7. What makes a running shoe “sustainable”?
    • A. Made from non-biodegradable plastic
    • B. Carbon-neutral, recycled, or plant-based materials
    • C. Single-use shoe design
    • D. No transparency in manufacturing
  8. Which of these materials is considered eco-friendly for running apparel?
    • A. Polyester
    • B. Organic cotton
    • C. Non-recycled nylon
    • D. Pure plastic
  9. What is the most effective way to manage waste at a sustainable ultramarathon?
    • A. Ignoring waste management
    • B. Burning trash on-site
    • C. Composting, recycling, and reusing
    • D. Disposing of all waste in a landfill
  10. How can race organizers offset the carbon footprint of their event?
    • A. Ignoring travel emissions
    • B. Providing plastic swag bags
    • C. Supporting renewable energy or reforestation
    • D. Increasing race fees without reason

✅ Quiz Answers

  1. Correct Answer: B. Cupless hydration stations
  2. Correct Answer: C. Recycled polyester apparel
  3. Correct Answer: B. Choosing local races
  4. Correct Answer: C. To neutralize carbon emissions from travel
  5. Correct Answer: B. Compostable energy gel wrappers
  6. Correct Answer: B. Providing reusable silicone cups for runners
  7. Correct Answer: B. Carbon-neutral, recycled, or plant-based materials
  8. Correct Answer: B. Organic cotton
  9. Correct Answer: C. Composting, recycling, and reusing
  10. Correct Answer: C. Supporting renewable energy or reforestation

🌟 Final Thoughts: Run Sustainably, Run Strong

As you lace up your eco-friendly shoes and prepare for your next adventure, remember that every step you take can leave a positive impact on the planet. Sustainable ultrarunning is not just about completing a race; it’s about respecting the trails, protecting nature, and making mindful choices for yourself and future generations.

Whether you choose local races, embrace zero-waste practices, or gear up with eco-conscious equipment, your efforts matter. You are not just a runner — you are a steward of the trails. Keep running green, keep running strong. 🌿

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