Lost Sierra Endurance Race
Downieville, United States • 25 Jul 2026
Lost Sierra Endurance Race
The Lost Sierra Endurance Race takes place on July 25, 2026, in Downieville, California. The event, organized by Bad Luck Run Club, offers trail race options of different lengths and finishes in Downieville. A post-race gathering is scheduled at the finish area.
- 25K - Loop start/finish Downieville; elevation gain 2,330 ft; cutoff 6 hours
- 50K - Point-to-point start Plumas-Eureka State Park, finish Downieville; gain 5,360 ft; cutoff 10 hours
- 100K - Out-and-back start/finish Downieville; elevation gain 10,780 ft; cutoff 20 hours
Course and logistics
Courses are mostly singletrack with sections of rocky and smooth trail, some mountain-bike singletrack, and small amounts of dirt, gravel, or paved road. There are five unique aid stations; all are stocked with water, hydration mix, and light food. Aid stations #1, #2, and #5 provide warm food. The 100K route includes nine total stops along the out-and-back course.
Race rules and services: 100K runners must carry a pack or hydration vest, a space blanket, and a headlamp. Trekking poles are allowed. Pacers are permitted for 100K runners on the return at specified aid stations; only one pacer may accompany a runner at a time and there is no shuttle support for pacers. A shuttle from Downieville to the 50K start is available for a fee. Downieville has limited lodging; informal tent camping at the start area is possible but facilities are minimal. Visit the organization's website for the most recent information.