Endure Trail Runs

Endure Trail Runs

The Endure Trail Runs take place in Mueller State Park, starting and finishing at the Pisgah Point Group Camping Area in Divide, Colorado. This event features multiple distances and formats that utilize various trail loops within the park. The courses consist entirely of single-track and double-track trails with no paved sections.

The event offers several traditional distance options:

• 10k (6.81 miles): Runners complete the green and orange loops.
• Half Marathon (14.12 miles): Participants run the green, orange, and purple loops.
• Marathon (26.53 miles): Runners follow a sequence of the green, orange, purple (including Grouse Mountain), blue, and red loops.

In addition to traditional races, there are two 12-hour timed ultra events. These formats use a randomized loop system determined by drawing colored balls from a bucket.

• 12-Hour Tiny Balls: This is a distance-based timed event where each runner draws a colored ball before every loop to determine their next route. Participants can run as many miles as they choose within the 12-hour limit. Results are based on total mileage rather than time.
• 12-Hour Endure (LMS): This is an elimination-style event. The race director draws a loop color and a pace ball for the entire field. Runners must complete the assigned loop within a pace ranging from 14:00 to 16:30 minutes per mile to remain in the competition. Those eliminated may move to the Tiny Balls event to continue running.

All participants have access to an aid station throughout the event. Traditional distances feature an 11-hour cutoff. Visit the organization's website for the most recent information.