Race Weekend is Saturday, July 25, 2015
Welcome to the most difficult mountain bike race in the country: The Butte 100. The Butte 100 consists of two individual races, a 50- and 100-mile version, taking place atop the Continental Divide just outside of Butte, Montana. The race has grown from a small group of dedicated locals on a gravel road, to world-class athletes competing on world-class trails. With outstanding partnerships with the USFS, BLM, community of Butte, our generous sponsors, and the “neon army” of volunteers, the Butte 100 continues to to provide the best racing experience possible. Thanks for visiting.
As lottery closing draws near, there is currently a 100% chance of getting into the 100-mile race (70+) and a 50% chance at the 50-miler (200+). If the 100 doesn’t fill, we will cap the race where it stands at the end of lottery registration and move remaining registrations to the 50-mile.
*Butte 25 Mountain Bike Race permit is signed: tentative details here
*2015 Butte 100 races will now be lottery-based, see Registration Page for more details. Registration opens Jan. 1- Mar. 1.
The Butte 100 is run in cooperation with: