Mammoth Bar Trail Runs

The Mammoth Bar Trail Runs, hosted by Skybreaker Racing, is a new trail running event held in the Mammoth Bar OHV Area within Auburn State Recreation Area, Auburn, California. Scheduled for September 7, 2025, the event features three race distances: a half marathon, 10K, and 5K. The courses are known for their challenging terrain, including steep climbs and descents, offering significant elevation gain ("Mammoth vert") and scenic views of the American River Canyon.

Runners experience a mix of single-track and double-track trails, making it a demanding and picturesque race in the "Endurance Capital" of Auburn. Visit the organization's website for the most recent information.