November 22-23, 2025

Dinosaur Valley Endurance Run

2025 Event on Facebook

The race is held at the beautiful Dinosaur Valley State Park in Glen Rose, Texas. This course has rolling and sustained ascents and descents that take you through varied terrain. There are amazing overlooks on this course where you can see for miles. The event offers race distances of 5 miles, 25K, 50K, 100K, and 100 miles. 100 milers get a recorded time for 100K distance, and the race is a 100K qualifier for the Western States Endurance Run for all those who pass the 100K distance in under 22 hours. The race is also a 100 mile qualifier for the Western States Endurance Run for all those who complete 100 miles in under 35 hours.

Helping Our Community

After the 2023 event, we were able to donate $4,000 to Dinosaur Valley State Park (in Glen Rose, TX) to buy a rescue skid (like a sturdy medical gurney) to attach to their new EMS ATV to get people with medical emergencies off the trail quickly!

We are a Western States qualifier.

And those entered in the 100K and the 100 miler can earn their qualifier with our unique setup.

Changes from 2023 to 2024

We are always looking to improve the event. We put in a lot of great improvements the last 3 years, and as we make improvements in 2024, they will be listed here.

Reasons to Race with Us! There are lots of reasons, but we'll give you ten!

All are welcome, but we actively invite and support the following groups to join our events:

(Click each one to learn more)

Back-of-the-Pack Athletes / Walkers / Hikers

Athletes with Disabilities or Impairments

Aging Athletes

Land Acknowledgment

We support the Running on Native Lands Initiative, a program by Rising Hearts. This race takes place on land regions that were the traditional territory of the Jumanos, Wichita, Nʉmʉnʉʉ Sookobitʉ (Comanche), and Kiikaapoi (Kickapoo) peoples throughout the land’s history. We recognize these lands were stolen from these Indigenous tribes. They protected and cared for these lands, and we need to continue to do that too.

Volunteers Needed!

They make events happen!

Getting participants to the finish line is a COMMUNITY effort. It takes a lot of volunteer shifts to make each event successful. We are thankful for our volunteers.

Earn Free Race Entries! We have a program to reward our volunteers with future free race entries! We keep it simple: accrue credits by volunteering for a shift, trade in your credits for comp entries into our trail or road races. Credits expire a year after they're earned. Learn More Here...

Sign up to volunteer here!

Questions?

Contact Us!

info@dinosaurvalleytrailrun.com