Fall Endurance Season

From high-altitude trail running and gravel cycling to world-class obstacle course races, take on your toughest adventure yet—surrounded by towering Sierra peaks, golden aspen groves, and tranquil alpine lakes.

In fall, Mammoth Lakes transforms into an endurance‑athlete’s paradise. Known as Endurance Season, the autumn months bring a lineup of elite events—in iconic challenges like the Mammoth Gran Fondo, TUFF gravel races, Trailfest, The Mammoth ultra, and the Spartan Super World Championships—all set at high elevation in the crisp mountain air of the Eastern Sierra. With fewer crowds, stunning fall colors, and top-notch elevation training conditions, Mammoth Lakes offers an unbeatable blend of performance and scenic immersion.

Take advantage of United Airline’s extended flights into Bishop (BIH) through October 6, 2025 for late-season racing and training! Learn more.

Spartan
Spartan Super World Championships
The Spartan Super World Championships are coming to Mammoth Lakes, California this October 4-5th! At nearly 8,000 feet in elevation, Mammoth Lakes isn’t just a stunning destination - it’s a proving ground…
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Explore Endurance Season

Your Guide to Fall Endurance Events in Mammoth Lakes
man balancing in obstacle course with mountains in the background
Mammoth Lakes Training Toolkit for Endurance Athletes
woman running on a trail in the mountains and forest
High Altitude Tips
Autumn Scenery & Fall Colors
Fall
Fall is the perfect time to explore the great outdoors in Mammoth Lakes. As the season changes, the Eastern Sierra is transformed into a stunning landscape of gold, crimson, and orange, setting…
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Autumn Scenery & Fall Colors
Eastern Sierra Fall Colors Newsletter
Sign up for the Eastern Sierra Fall Colors Newsletter and get the full scoop on where and when the colors are peaking weekly
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Endurance Season Deals
Special Offers from Local Businesses
Loving unreal adventures in Mammoth Lakes doesn’t mean you can’t also love very real deals on lodging, flights, restaurants and more. More savings means more room for more fun, after all…
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Resources for your visit