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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 grueling course featuring 23,500 feet of vertical gain, reaching elevations of up to 13,100 feet. The race includes a loop that traverses beautiful singletrack trails, the Continental Divide, and the Colorado Trail, 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, supported by a dedicated community of volunteers and staff. 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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