Lost Sierra Endurance Race

Downieville, United States • 26 Jul 2025

The Lost Sierra Endurance Race, held in Downieville, California, offers a challenging and scenic trail running experience through the Sierra Buttes. Scheduled for July 26, 2025, the event features three distances: 25K, 50K, and 100K. The 100K is an out-and-back course starting in downtown Downieville, passing through rugged single-track trails and multiple aid stations, with significant elevation gain of over 10,700 feet.

The 50K is a point-to-point route from Plumas-Eureka State Park to Downieville, featuring rocky and smooth trails with two major climbs. The 25K is a looped, less demanding course through river canyons. The race emphasizes community with aid stations, crew access points, and a post-race BBQ. Visit the organization's website for the most recent information.

Race information

UTMB 50K UTMB 100K
100 km
100k
50 km
50k
25 km
25k
Visit the organization's website for the most recent information.
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