Conquer the Sierra Buttes.
Downieville, United States • 26 Jul 2025
The Lost Sierra Endurance Race, organized by Bad Luck Run Club, is a challenging trail running event held in Downieville, California, on July 26, 2025. Participants can choose from 25K, 50K, and 100K courses, each offering scenic routes through the Sierra Nevada mountains, including the Sierra Buttes, lakes, and canyons. The race features aid stations with food and hydration, and the 100K course includes major climbs and remote sections requiring mandatory gear. The event promotes community support through The Unity Initiative, encouraging donations to local nonprofits. Post-race activities include a BBQ, and finishers receive custom medals or buckles. Visit the organization's website for the most recent information.