Mammoth Lakes, CA

From world class trail races and community focused events, to free live entertainment, storytelling, and great local food, Mammoth Trail Fest is a multi-day experience designed to increase access to trail and ultrarunning through opportunity, education, and trail stewardship. We believe that equity and inclusion in the sport need to be actively cultivated and Mammoth Trail Fest aims to be a platform for all abilities and backgrounds to experience the joy of time spent on the trail while honoring the rich history and current inhabitance of local indigenous groups throughout the Sierra Nevada. So join us before the snow flies for a true high-altitude season end party with the trail community right in the heart of California!

50K: Single loop course of Mammoth Lakes that starts/ends in the Village plaza designed for maximum beauty, experience, and challenge. With nearly 8,000ft of vertical gain and an average elevation over 9,000ft, this is a true mountain running event that will leave you equally exhausted and inspired to return year after year. Prize$$$

Upcoming Races

Sep 23 2023
50 KM
Single Loop Course
7 Aid Stations
12:00 Cutoff
4 Elevation Rating
Very hilly, ~7500-12,500 feet in 50 miles
4 Surface Rating
Substantial rocks, roots and/or ruts


Date Finishers Top Result (M) Top Result (F)
09/24/22 234 3:58:52 5:21:19