Endure Trail Runs
- Date
- May 16, 2026
- Distance
- 10k · Half Marathon · Marathon & more
From the Organizer
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
Distances & Pricing
Race Location
About This Sport
From Endurance Grid's Founder
Endurance Grid is here to help you understand the sport, decide if it's the right fit, and learn how to prepare. For course distances, logistics, and race-day specifics, always defer to the race organizer's event page.
The half marathon is the distance where you find out what you're actually made of. Long enough to demand real preparation. Short enough that it doesn't consume your life to train for it. Most people who run their first half describe it as the race that changed their relationship with what they're capable of. Once you cross this finish line, the bar moves. That's not a warning — that's the point.
Race day energy varies by event size, but the finish line feeling is the same regardless. Big races keep the noise going the whole way. Smaller races give you stretches where it's just you and the miles — and that solitude becomes its own kind of fuel.
The half marathon rewards people who show up for the boring training miles.
How long to train: 10–14 weeks. If you're already running consistently, 10 weeks of structured buildup is enough. If you're building from a casual base, give yourself 14.
Running
From 5K to marathon, running races are the most accessible entry point into endurance sport. There's a distance for every fitness level and a community at every start line.
Coming Up
More running races in CO
Trinidad Wellness Festival 5K
5K
Treat Trot - Denver
Festival in the Clouds Firefighter 5K, Fun Run and Doggie Dash
5K
Shootout for Soldiers Colorado
Frequently Asked Questions (FAQs)
- What is the Endure Trail Runs?
- Endure Trail Runs is a running event held in Divide, CO. Learn more about the different endurance sports here.
- When and where is the Endure Trail Runs?
- Saturday, May 16, 2026 in Divide, CO at Mueller State Park - Pisgah Point Group Camping Area, Divide, CO. Check the official event page for exact start times and wave schedules.
- How do I register for the Endure Trail Runs?
- Registration is handled through their official registration page. Confirm pricing, distances available, and sign up there.
Endure Trail Runs
May 16, 2026