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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 demanding 50-mile single-track course with over 10,000 feet of elevation gain, traversing high mountain ridges and valleys with stunning views of the Gallatin and Bridger ranges. Designed for experienced trail runners, the event offers both solo and two-person relay options. Aid stations are limited and spaced far apart, requiring runners to be largely self-sufficient. The race emphasizes environmental responsibility and preparedness for variable mountain weather, making it a true test of endurance and mountain skills. 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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