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Devil's Backbone

Bozeman, United States • 12 Jul 2025

The Devil's Backbone 50 Mile & Relay is a challenging ultramarathon held in the remote Gallatin National Forest near Bozeman, Montana. The race features a single 50-mile course with over 10,000 feet of elevation gain, traversing high mountain ridges and valleys with technical single-track trails, steep climbs, and rocky descents. Participants experience stunning wilderness views of the Gallatin and Bridger mountain ranges. The event offers solo and two-person relay options, with limited aid stations spaced about 24 miles apart, requiring runners to be self-sufficient. Designed for experienced trail runners, the race emphasizes environmental responsibility and preparedness for variable mountain weather. Visit the organization's website for the most recent information.

United States Montana Bozeman

Race information

Website Registration
50 mi
10000 m+
50 Mile
Visit the organization's website for the most recent information.
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