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Sat May 16, 2026 Directions
“Letting Little Balls Decide My Fate”
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Events

10k

$54 incl. $4 Fee 9:00AM MDT - 7:00PM MDT
200 spots left. Registration Opens December 1, 2025 at 12:00am MST

Half Marathon

$75.20 incl. $5.20 Fee 9:00AM MDT - 7:00PM MDT
200 spots left. Registration Opens December 1, 2025 at 12:00am MST

Marathon

$107 incl. $7 Fee 8:00AM MDT - 7:00PM MDT
200 spots left. Registration Opens December 1, 2025 at 12:00am MST

12-Hour

$128.20 incl. $8.20 Fee 8:00AM MDT - 8:00PM MDT
200 spots left. Registration Opens December 1, 2025 at 12:00am MST

Description

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

**ALL RACE INFO ON OUR WEBSITE**

We ask that you please visit our formal website for the most up to date information about this event, as well as info about who we are and what we're about, HPRS policies, FAQ, and more. Most questions that you may have can be answered on our website. 

Race Website

Additional race information can be found at https://humanpotentialrunning.com/endure/.

Race Contact Info

If you have any questions about this race, please contact the race director at

HPRS POLICIES

By registering for one of our races you agree to accept the terms of and abide by all HPRS policies including but not limited to our Code of Conduct, Refund/Credit/Deferral/Transfer policies, our Cancellation Policies, our Race Rules, our Anti-discrimination Policies and any other logistics or arrangements you that must adhere to. Click the links below to get more information about any of this or to discuss things further please email us at info@HumanPotentialRunning.com  

To view our complete listing of HPRS Race Policies, please click here: https://humanpotentialrunning.com/race-policies/ 

To view our Anti-Discrimination Policies, please click here: https://humanpotentialrunning.com/anti-discrimination/  

 

Place

Mueller State Park, Pisgah Point Group Campground, 21045 CO-67 Divide, CO 80814

Sponsors

Directions

Mueller State Park, Pisgah Point Group Campground, 21045 CO-67 Divide, CO 80814

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