Lost Sierra Endurance Race

Race Details

July 26, 2025
Downieville
California
25K
50K
100K
Lost-Sierra-2024-59

The Lost Sierra Endurance Race, is a thrilling endurance experience set against the stunning backdrop of the Sierra Buttes in Downieville, CA, taking place on July 26th, 2025. Choose your challenge with our 25K, 50K, and 100K races, each offering a unique journey through the heart of the Sierra Nevada mountains. To celebrate your finish, join us for a post race BBQ right at the finish line. The flagship 100K race embarks on an out-and-back adventure, navigating the scenic Third Divide Trails, Pacific Crest Trail, and Lakes Basin Trails. This challenging course leads runners from the charming town of Downieville, CA, to Blairsden, CA, offering panoramic views of the northern Sierra Nevada mountains. For those opting for the 50K race, the adventure begins at Plumas-Eureka State Park in Blairsden, CA, traversing the same awe-inspiring course of lake valleys, alpine ridge lines, and river canyons to then finish in downtown Downieville. New for this year, the 25K race starts and ends in Downieville. This course is relatively easy, making it perfect for those looking for a less demanding yet equally beautiful experience through the river canyons.

Share This Race!

More Races

Enchanted Forest Trail Races
8M
13.8M
26.2M
July 26, 2025
Red River
, New Mexico
Tushars Mountain Runs
100K
70K
26.2M
13.1M
July 26, 2025
Eagle Point Ski Resort
, Utah
Moosalamoo Ultra
14M
36M
July 26, 2025
Goshen
, Vermont

Join Now

Team Trail Sisters

Watch Films

And So She Flew-min

And So She Flew

Sandi Nypaver