In 326 days · Sat, Jul 17, 2027
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Saturday, July 17th, 2027
Homestake Pass, Butte MT
1 Mile
51–78°F · low rain risk
See last 10 years
On this date: rain 0 of the last 10 years
2026
57–82°F
dry
2025
49–79°F
dry
2024
58–85°F
dry
2023
56–77°F
dry
2022
56–86°F
dry
2021
50–84°F
dry
2020
51–78°F
dry
2019
43–70°F
dry
2018
52–73°F
dry
2017
46–75°F
dry
Best months to race in Montana →
About this race
Race Overview
Welcome to the most difficult mountain bike race in the country: The Butte 100. The Butte 100 race weekend consists of three individual races, a 100 mile, 50 mile and the Sorini 25, 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.
Event Highlights
- Location: Taking place atop the Continental Divide, Butte, Montana.
- Race Options: Choose from three races: 100 mile, 50 mile, and the Sorini 25.
- Growth: From a local event to a race attracting world-class athletes.
- Community Support: Supported by outstanding partnerships with USFS, BLM, and generous sponsors.
Volunteer Support
The Butte 100 races continue to provide the best mountain bike racing experience possible thanks to the “neon army” of volunteers.
Stay Updated
Please visit our Facebook page for updates and announcements.
Race Information
For more details, visit the official race page: Butte 100 MTB Race.
Course map
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