Dinosaur Valley Endurance Run
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Dinosaur Valley Endurance Run
The event is scheduled for November 21-22, 2026 at Dinosaur Valley State Park in Glen Rose, Texas. Registration opens on 12/15/25. The race is organized by The Active Joe.
Distances and course
The event offers multiple race distances:
- 5 miles
- 25K
- 50K
- 100K
- 100 miles
The course includes rolling and sustained ascents and descents over varied terrain, with overlooks that provide long views. Runners in the 100-mile event receive a recorded time at the 100K distance.
The race is a Western States Endurance Run qualifier: a 100K qualifier for runners who pass the 100K distance in under 22 hours, and a 100-mile qualifier for those who complete 100 miles in under 35 hours.
Community and support
Organizers have partnered with the park on community needs, including a $4,000 donation to purchase a rescue skid for the park’s EMS ATV. Volunteers are needed for event operations; a volunteer credit program lets volunteers trade accrued credits for future race entries, with credits expiring one year after they are earned.
The event includes a land acknowledgment recognizing the Jumanos, Wichita, Nʉmʉnʉʉ Sookobitʉ (Comanche), and Kiikaapoi (Kickapoo) peoples as traditional stewards of the area. Visit the organization's website for the most recent information.
