Mammoth Trailfest

Mammoth Trailfest is a weekend event featuring world-class trail races, community events, live entertainment, and great local food in the beautiful Eastern Sierra. From trail races to free live entertainment, Mammoth Trailfest offers a multi-day experience designed to increase access to trail and ultrarunning through opportunity, education, and trail stewardship.

Everyone should have the opportunity to experience the transformative power of trail running in the splendor of California's Eastern Sierra. Mammoth Trailfest is an event built by the community, for the community, right in the heart of California. Join us for inspiring stories, great local food, and many miles of trail running before the snow covers the Sierra.