Crazy Mountain 100

The Crazy Mountain 100 is a challenging 100-mile ultramarathon held in Montana's rugged Crazy Mountain Range. Starting in Wilsall and finishing near the ghost town of Lennep, the point-to-point course features approximately 23,000 feet of vertical gain, reaching elevations up to 10,200 feet. The route includes technical single-track trails, steep ascents and descents, scree fields, and sections without established trails, crossing private ranch lands and Indigenous Apsaalooke territory. Known for its extreme difficulty and remote wilderness, the race offers a unique experience with stunning alpine scenery. Limited to 200 runners, it serves as a qualifier for Hardrock and Western States ultras. Visit the organization's website for the most recent information.