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Endure Trail Runs

Endure Trail Runs is a running, trail running, and ultra race on May 15, 2027 in Divide, CO, with entry fees from $60 to $130.

Date
May 15, 2027 (296 days to go)
Price
$60–$130
Sports
RunningTrail RunningUltra
Register →

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

Events

Marathon$100
12-Hour (Tiny Balls)$130
12-Hour (Endure- LRS)$130
10k$60
Half Marathon$80

Weather

Typical Conditions

It's too far out for a forecast, so here's what weather on this date is normally like in the area. A race day forecast will replace this as race week approaches.

Typical High

56°

Typical Low

31°

Based on US Climate Normals data from Divide 4nw, 1 mi from the venue.

Sunrise 5:48 AMSunset 8:06 PMDaylight 14h 18m

Host City

About Divide, CO

City Elevation

9,061 ft

Nearest Airport

COS

City of Colorado Springs Municipal Airport · 29 mi

Time Zone

Mountain Time

From Endurance Grid

Line up lodging and travel early to lock in your race weekend.

Race Location

Your Next Start Line

What Are You
Waiting For?

Every finish line starts with a single decision. Claim your spot at Endure Trail Runs, put it on the calendar, and turn “someday” into a start date.

296

Days to train

Race
Endure Trail Runs
Date
May 15, 2027

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From Endurance Grid

About These Sports

This race spans more than one sport — here’s a guide to each, so you can understand what’s involved and decide if it’s the right fit. For course distances, logistics, and race-day specifics, always defer to the race organizer’s event page.

Running

From 5K to marathon, running races are an accessible entry point into endurance sport. There's a distance for every fitness level and a community at every start line.

Trail Running

Running off-road — dirt, singletrack, and mountain paths — from 5Ks to ultras. The terrain makes for an exciting twist and adventure in your running journey.

Ultramarathon

An ultramarathon is anything beyond the standard marathon — 50K, 50-mile, 100K, 100-mile, and timed events. Crossing the line is less about speed and more about not quitting.

Plan your trip

Make it a Racecation

Coming from out of town? There's more to Divide than race day. We'll help you line up nearby lodging, flights, a rental car, and things to do so you can make the most of your racecation.

Plan your trip to Divide
Lodging
Flights
Rental Car
Activities

Frequently Asked Questions (FAQs)

What is the Endure Trail Runs?+
Endure Trail Runs is a running, trail running, and ultra race held in Divide, Colorado on May 15, 2027. It is one of the many endurance events listed on Endurance Grid, a multi-sport endurance event calendar covering running races, triathlons, HYROX, and more endurance sports across the United States. Find more running races near you or explore our sports guides to learn what race day actually feels like.
When and where is the Endure Trail Runs?+
Saturday, May 15, 2027 in Divide, Colorado at Mueller State Park - Pisgah Point Group Camping Area. Check the event page for exact start times and wave schedules.
How do I register for the Endure Trail Runs?+
Registration is handled through the event's registration page. Confirm pricing and distances there, and sign up.

Endure Trail Runs

May 15, 2027

Register →