Butte 100 MTB Race

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At a Glance:

Date: 19 Jul, 2025 12AM
Location: Homestake Pass, Butte, MT, 59701, US
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Details:

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. With outstanding partnerships with the USFS, BLM, community of Butte, our generous sponsors, and the “neon army” of volunteers, the Butte 100 races continue to provide the best mountain bike racing experience possible. Thanks for visiting.

Please visit our Facebook page for updates and announcements.

Events:

Butte 100

Distance: 99.8 Miles
Sign up window: 5 Jan, 2025 2PM - 18 Jul, 2025 1:59 AM
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Butte 50

Distance: 50.33 Miles
Sign up window: 5 Jan, 2025 2PM - 18 Jul, 2025 1:59 AM
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Sorini 25

Distance: 26.64 Miles
Sign up window: 5 Jan, 2025 2PM - 19 Jul, 2025 1:59 AM
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Single Speed 100

Distance: 99.8 Miles
Sign up window: 5 Jan, 2025 2PM - 18 Jul, 2025 1:59 AM
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Single Speed 50

Distance: 50.33 Miles
Sign up window: 5 Jan, 2025 2PM - 18 Jul, 2025 1:59 AM
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Single Speed 25

Distance: 26.64 Miles
Sign up window: 5 Jan, 2025 2PM - 18 Jul, 2025 1:59 AM
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Tandem 100

Distance: 99.8 Miles
Sign up window: 5 Jan, 2025 2PM - 18 Jul, 2025 1:59 AM
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Tandem 50

Distance: 50.33 Miles
Sign up window: 5 Jan, 2025 2PM - 18 Jul, 2025 1:59 AM
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Tandem 25

Distance: 26.64 Miles
Sign up window: 5 Jan, 2025 2PM - 18 Jul, 2025 1:59 AM
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Race details and prices subject to change at the race organizers’ discretion.