Lost Sierra Endurance Race

Welcome to the Lost Sierra Endurance Race, a thrilling endurance experience set against the stunning backdrop of the Sierra Buttes in Downieville, CA. Choose your challenge with our 50KM and 100KM races, both promising an unforgettable journey through the heart of the Sierra Nevada mountains.

The flagship 100KM race embarks on an exhilarating 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 to downtown Graeagle, offering panoramic views of the northern Sierra Nevada mountains. The route then doubles back, ensuring participants experience the full splendor of this breathtaking region.

For those opting for the 50KM race, the adventure begins in Graeagle, traversing the same awe-inspiring course and finishes in downtown Downieville.

Get ready for an immersive experience with constant high sierra running, allowing you to soak in the spectacular vistas of the Sierra Nevada. Join us for the Lost Sierra Endurance Race, where every step is a journey, and every view is a masterpiece. Presented by: Bad Luck Run Club and Skybreaker Racing