Endure Trail Runs
About the Event
The Human Potential Running Series Presents:
The Endure Trail Runs @ Mueller State Park
The Endure 12-Hour is a one-of-a-kind 12-Hour timed event designed by YOU… and tiny colorful balls. Each runner will pull colored balls from a bucket, which determines the loop they’ll next run. This continues for up to 12 hours; the runner’s result is the miles they ran within the allotted time. You are not required to run for all 12 hours, as your final result is the number of miles you ran within the time you participate!
The 10k, Half Marathon, and Marathon are great ways to enjoy Mueller State Park’s natural beauty in a supportive, “no-pressure” environment. All three distances feature a generous 11-hour cutoff.
All courses feature double-track and single-track trails with ZERO pavement, and an aid station you’ll want to hang around at for hours (we’re that much fun)!
Formerly Known As The Tommyknocker 12-Hour & Mine Shaft Half
Ready to test your limits? The Endure Trail Runs brings a highly anticipated 11K, 22.7K, Marathon to Divide on May 16, 2026. Expect a fantastic route right in the heart of Colorado.
Races Offered
Running
10k
Runner's will complete the green then orange loops, for a slightly Heavy 10k Finish.
Trail running
Half Marathon
Runner's will complete the green loop, followed by the orange loop, followed by the purple loop for a half marathon distance.
Marathon
Runners will complete the green loop, the orange loop, the purple loop (including Grouse Mountain), and the blue loop, finishing with the red loop in that order for a full marathon distance. That is one of each loop associated with the event!
About Divide
Endure Trail Runs takes place in Divide, Colorado, United States. The local timezone is America/Denver.
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Race information has been sourced from the event's official website and other publicly available resources. For the most up-to-date details, please refer to the official website directly. If you notice any incorrect or missing information, don't hesitate to reach out to us by email.
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