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High Lonesome 100

Mount Princeton, United States • 18-19 Jul 2025

The High Lonesome 100 is a challenging 100-mile trail race set in the stunning Sawatch Range of the Colorado Rocky Mountains. Participants will experience a loop course featuring 23,500 feet of vertical gain, reaching elevations of up to 13,100 feet. The race traverses beautiful singletrack trails, the Continental Divide, and the Colorado Trail, while passing through two ghost towns and over five alpine passes. With a time limit of 37 hours, this event is designed for experienced runners seeking a true mountain racing experience. The High Lonesome 100 fosters a supportive community, making it a unique and rewarding challenge for all participants. Visit the organization's website for the most recent information.

United States Colorado Mount Princeton

Race information

Website
100 mi
23500 m+
100 Miles
Visit the organization's website for the most recent information.
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