Mammoth TrailFest is an annual trail running festival set in the stunning Mammoth Lakes region of California, attracting trail running enthusiasts from all over. The event offers a range of races, including the 26K and 50K, which take participants through rugged mountain trails, picturesque forests, and around serene alpine lakes. Known for its challenging courses and breathtaking scenery, the festival provides a unique opportunity for both seasoned runners and newcomers to experience the beauty of the Eastern Sierra. With a festive atmosphere, stunning landscapes, and a sense of community, Mammoth TrailFest is more than just a raceāit's a celebration of trail running and outdoor adventure.
Races
82km
50km
26km
Race Date:
19 September, 2025
The Mammoth Trail Fest Ultra 82km on September 19, 2025, takes runners through 4,084 meters of elevation gain in the rugged terrain of Mammoth Lakes, California. Organized by Eastern Sierra Running, LLC, this race offers a challenging course with breathtaking views of the Eastern Sierraās peaks and valleys.
Race Date:
20 September, 2025
The Mammoth Trail Fest Ultra 50km on September 20, 2025, features a dynamic 50km route with 2,134 meters of elevation gain, set against the scenic backdrop of Mammoth Lakes. Organized by Eastern Sierra Running, LLC, this race balances challenging climbs with breathtaking views for a rewarding ultra experience.
Race Date:
21 September, 2025
On September 21, 2025, the Mammoth Trail Fest 26km invites runners to explore 1,189 meters of elevation gain in the picturesque Mammoth Lakes. Organized by Eastern Sierra Running, LLC, this shorter race showcases the rugged beauty of the Eastern Sierra in an accessible but challenging format.
Weather based on historical averages.
FAQs
What is the Mammoth Trail Fest Ultra 82km?
How long is the Mammoth Trail Fest Ultra 82km?
Where does the Mammoth Trail Fest Ultra 82km take place?
What is the elevation gain of the Mammoth Trail Fest Ultra 82km?
How can I prepare for the Mammoth Trail Fest Ultra 82km?
How do I choose the right training plan for the Mammoth Trail Fest Ultra 82km?
The Mammoth Trail Fest Ultra 82km on September 19, 2025, takes runners through 4,084 meters of elevation gain in the rugged terrain of Mammoth Lakes, California. Organized by Eastern Sierra Running, LLC, this race offers a challenging course with breathtaking views of the Eastern Sierraās peaks and valleys.
The Mammoth Trail Fest Ultra 82km is 82km long.
The Mammoth Trail Fest Ultra 82km takes place in Mammoth Lakes, California, USA.
The Mammoth Trail Fest Ultra 82km elevation gain is 4084 meters, which Runna classifies as a Hilly race.
The best way to train for the next race is to use a personalized training plan that takes into account your current running ability, schedule, and preferences.
This will help you steadily improve your running performance and get ready for the race without risking an injury.
Check out our training plans to find the best running program for your goals!
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalized training plans for every runner and every goal: Whether this is your first, 10th or 100th race, we'll help you get the most out of your training and smash your goals.
Check out our training plans to find the best running program for your goals!
What is the Mammoth Trail Fest Ultra 82km?
The Mammoth Trail Fest Ultra 82km on September 19, 2025, takes runners through 4,084 meters of elevation gain in the rugged terrain of Mammoth Lakes, California. Organized by Eastern Sierra Running, LLC, this race offers a challenging course with breathtaking views of the Eastern Sierraās peaks and valleys.
How long is the Mammoth Trail Fest Ultra 82km?
The Mammoth Trail Fest Ultra 82km is 82km long.
Where does the Mammoth Trail Fest Ultra 82km take place?
The Mammoth Trail Fest Ultra 82km takes place in Mammoth Lakes, California, USA.
What is the elevation gain of the Mammoth Trail Fest Ultra 82km?
The Mammoth Trail Fest Ultra 82km elevation gain is 4084 meters, which Runna classifies as a Hilly race.
How can I prepare for the Mammoth Trail Fest Ultra 82km?
The best way to train for the next race is to use a personalized training plan that takes into account your current running ability, schedule, and preferences.
This will help you steadily improve your running performance and get ready for the race without risking an injury.
Check out our training plans to find the best running program for your goals!
How do I choose the right training plan for the Mammoth Trail Fest Ultra 82km?
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalized training plans for every runner and every goal: Whether this is your first, 10th or 100th race, we'll help you get the most out of your training and smash your goals.
Check out our training plans to find the best running program for your goals!
What is the Mammoth Trail Fest Ultra 50km?
How long is the Mammoth Trail Fest Ultra 50km?
Where does the Mammoth Trail Fest Ultra 50km take place?
What is the elevation gain of the Mammoth Trail Fest Ultra 50km?
How can I prepare for the Mammoth Trail Fest Ultra 50km?
How do I choose the right training plan for the Mammoth Trail Fest Ultra 50km?
The Mammoth Trail Fest Ultra 50km on September 20, 2025, features a dynamic 50km route with 2,134 meters of elevation gain, set against the scenic backdrop of Mammoth Lakes. Organized by Eastern Sierra Running, LLC, this race balances challenging climbs with breathtaking views for a rewarding ultra experience.
The Mammoth Trail Fest Ultra 50km is 50km long.
The Mammoth Trail Fest Ultra 50km takes place in Mammoth Lakes, California, USA.
The Mammoth Trail Fest Ultra 50km elevation gain is 2134 meters, which Runna classifies as a Hilly race.
The best way to train for the next race is to use a personalized training plan that takes into account your current running ability, schedule, and preferences.
This will help you steadily improve your running performance and get ready for the race without risking an injury.
Check out our training plans to find the best running program for your goals!
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalized training plans for every runner and every goal: Whether this is your first, 10th or 100th race, we'll help you get the most out of your training and smash your goals.
Check out our training plans to find the best running program for your goals!
What is the Mammoth Trail Fest Ultra 50km?
The Mammoth Trail Fest Ultra 50km on September 20, 2025, features a dynamic 50km route with 2,134 meters of elevation gain, set against the scenic backdrop of Mammoth Lakes. Organized by Eastern Sierra Running, LLC, this race balances challenging climbs with breathtaking views for a rewarding ultra experience.
How long is the Mammoth Trail Fest Ultra 50km?
The Mammoth Trail Fest Ultra 50km is 50km long.
Where does the Mammoth Trail Fest Ultra 50km take place?
The Mammoth Trail Fest Ultra 50km takes place in Mammoth Lakes, California, USA.
What is the elevation gain of the Mammoth Trail Fest Ultra 50km?
The Mammoth Trail Fest Ultra 50km elevation gain is 2134 meters, which Runna classifies as a Hilly race.
How can I prepare for the Mammoth Trail Fest Ultra 50km?
The best way to train for the next race is to use a personalized training plan that takes into account your current running ability, schedule, and preferences.
This will help you steadily improve your running performance and get ready for the race without risking an injury.
Check out our training plans to find the best running program for your goals!
How do I choose the right training plan for the Mammoth Trail Fest Ultra 50km?
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalized training plans for every runner and every goal: Whether this is your first, 10th or 100th race, we'll help you get the most out of your training and smash your goals.
Check out our training plans to find the best running program for your goals!
What is the Mammoth Trail Fest 26km?
How long is the Mammoth Trail Fest 26km?
Where does the Mammoth Trail Fest 26km take place?
What is the elevation gain of the Mammoth Trail Fest 26km?
How can I prepare for the Mammoth Trail Fest 26km?
How do I choose the right training plan for the Mammoth Trail Fest 26km?
On September 21, 2025, the Mammoth Trail Fest 26km invites runners to explore 1,189 meters of elevation gain in the picturesque Mammoth Lakes. Organized by Eastern Sierra Running, LLC, this shorter race showcases the rugged beauty of the Eastern Sierra in an accessible but challenging format.
The Mammoth Trail Fest 26km is 26km long.
The Mammoth Trail Fest 26km takes place in Mammoth Lakes, California, USA.
The Mammoth Trail Fest 26km elevation gain is 1189 meters, which Runna classifies as a Hilly race.
The best way to train for the next race is to use a personalized training plan that takes into account your current running ability, schedule, and preferences.
This will help you steadily improve your running performance and get ready for the race without risking an injury.
Check out our training plans to find the best running program for your goals!
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalized training plans for every runner and every goal: Whether this is your first, 10th or 100th race, we'll help you get the most out of your training and smash your goals.
Check out our training plans to find the best running program for your goals!
What is the Mammoth Trail Fest 26km?
On September 21, 2025, the Mammoth Trail Fest 26km invites runners to explore 1,189 meters of elevation gain in the picturesque Mammoth Lakes. Organized by Eastern Sierra Running, LLC, this shorter race showcases the rugged beauty of the Eastern Sierra in an accessible but challenging format.
How long is the Mammoth Trail Fest 26km?
The Mammoth Trail Fest 26km is 26km long.
Where does the Mammoth Trail Fest 26km take place?
The Mammoth Trail Fest 26km takes place in Mammoth Lakes, California, USA.
What is the elevation gain of the Mammoth Trail Fest 26km?
The Mammoth Trail Fest 26km elevation gain is 1189 meters, which Runna classifies as a Hilly race.
How can I prepare for the Mammoth Trail Fest 26km?
The best way to train for the next race is to use a personalized training plan that takes into account your current running ability, schedule, and preferences.
This will help you steadily improve your running performance and get ready for the race without risking an injury.
Check out our training plans to find the best running program for your goals!
How do I choose the right training plan for the Mammoth Trail Fest 26km?
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalized training plans for every runner and every goal: Whether this is your first, 10th or 100th race, we'll help you get the most out of your training and smash your goals.
Check out our training plans to find the best running program for your goals!
More
Sport:
Running
Tags:
Nature
Altitude
This event listing is for informational purposes only. Runna is not affiliated with, endorsed by, or sponsored by Mammoth TrailFest or Eastern Sierra Running, LLC. All event details are based on publicly available information and are provided solely to help users discover running events. Runna does not use any official logos, images, or proprietary content from this event or its organiser. Any trademarks or names mentioned are used descriptively to identify the event in a factual manner. For the most accurate and up to date information (including to register or purchase an entry to the event), please visit the Mammoth TrailFest website.
