Dinosaur Valley Endurance Run
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Dinosaur Valley Endurance Run : November 22-23, 2025
The Dinosaur Valley Endurance Run takes place at Dinosaur Valley State Park in Glen Rose, Texas, with a listed site address of 5000 Texas Dr. The 2025 event is the eighth running of the race and offers multiple distances over two days, with registration closing on Wednesday, November 19. The race is organized by The Active Joe.
Course, distances and policies
The course features a mix of terrain including soft dirt, rocks, and roots, with gradual up and downhills; some sections are technical while others are more runnable. The event records a 100K split for all runners who pass the 100K mark, so 100 milers who reach 100K receive a recorded 100K finish. The 100K and 100 mile distances are Western States qualifying races under current qualifying standards.
Distances:
- 100 Miler
- 100K
- 50K
- 25K
- 5 Miler
Each distance has a wait list once sold out. Priority is given to preregistered participants switching distances, past participants and volunteers, and those in the Trail Mix Fund. There is no fee to join the wait list; entrants notified from the wait list have 24 hours to accept. The race partners with the Trail Mix Fund to waive entry fees for eligible applicants and accepts donations to that fund. Active military and veterans are eligible for a listed 10% discount. Visit the organization's website for the most recent information.