Champion Mine Trail Race

Skybreaker Racing’s Mammoth Bar Trail Runs take place in the Mammoth Bar OHV Area within the Auburn State Recreation Area, near Auburn, California. The event offers three distances: Half Marathon, 10K, and 5K, designed for a high-vertical, rugged trail experience. Participants can expect steep climb..

Sunset & Cider Trail Races take place in Auburn, California, at Ponderosa Cider Co. The event offers 50K, 13.1-mile, and 5-mile trail distances. The 50K includes two out-and-back segments on the American River with runnable single-track and about 3,900 feet of climbing, aided by four stations.The 13..

The Auburn Half Marathon, held in Auburn, California, is a Brazen Racing trail event offering a half marathon, 12K, and 5K. Scheduled for October 4, 2025, the courses start at Overlook Park and run into the Auburn State Recreation Area, with more than half the route on the Western States Trail. Runn..

Yuba Gold Trail Runs takes place near Nevada City, California, in gold country. The event offers 50K, 35K, and Half Marathon distances along a historic route with views of the South Fork Yuba River and the Malakoff Diggins site. It’s an Independent P2P (DIY/self-guided) adventure rather than a tradi..

Euchre Bar Massacre is an ultramarathon near Foresthill, California, offering 25- and 50-mile fatass-style routes along the North Fork of the American River. The rugged course ladders about 10,000 feet of climbing for the 25-mile option and roughly 20,000 feet for the 50-mile, with substantial bushw..

Heart of Cool Trail Run is held in Cool, California (860 Cave Valley Rd, Cool, CA 95614) on Sunday, October 19, 2025. The event offers three trail distances: 5k Trail Run/Walk, 10k Run/Walk, and Trail Half Marathon. The course winds through premier Sierra Foothills trails around Cool, sharing the sa..