Novelty course · Mammoth Lakes, CA
Mammoth Trailfest is a fun run on a one-of-a-kind course in Mammoth Lakes, California, with no upcoming dates listed.
Season completedFamily friendly
- When
- Last held Sept 24–27, 2026; next date TBA
Start Tenkay 6:45 PM (Sept 25, 2026)
Late September weekend - Where
- The Village at Mammoth
Mammoth Lakes, CA 93546 · Mono
Directions - Entry
- Register
- Organized by
- Mammoth Trailfest
What to expect
2026 Season completed
- Sept 24–27, 2026
2027 Not announced
2027 not announced
Date TBA
About the run
Events include the Dragon's Back Ascent with a gondola ride down, the evening Tenkay with pizza and local beer, a 50K billed as California's highest ultra, a 26K and a kids' 1K.
The run
- Distances
- Vertical ascent, Night 10K, 50K, 26K, Kids 1K
- Season
- Fall
Nearby
Sources
- Official site official
- Registration official
Details checked against the race’s own pages on Sun, Oct 4, 2026.