Get ready for one of the nation's toughest mountain bike challenges! This epic race weekend, held on the Continental Divide near Butte, Montana, offers three distance options—100 miles, 50 miles, and the 25-mile Sorini—attracting elite riders to world-class trails. Thanks to amazing support from the USFS, BLM, local sponsors, and dedicated volunteers, the Butte 100 delivers an outstanding racing experience that's evolved from its grassroots beginnings into a premier event.