← The index
Texas · Glen Rose
Dinosaur Valley
Nov 21, 2026
Dinosaur Valley Endurance Run runs 9 loops of a 10.5-mile circuit plus a 5-mile finishing loop through Dinosaur Valley State Park in Glen Rose, Texas — 100 miles and 9,000 feet of gain. The terrain mixes double-track fields with wooded single-track over packed dirt, slick rock, and roots, hilly by Texas standards. Twenty-eight aid station stops cover the distance. A finish under 35 hours earns a Western States lottery qualifier; in 2025, top finishers Mark Wooten and Sarah Loch-Test crossed in 19:34 and 23:49.
The numbers
Race statistics
- Distance
- 100 mi
- Vertical gain
- 9,000 ft
- Course
- Loop
- Unique miles
- 17 mi
- Entry fee
- $290
- Lottery
- No
- Sub-24 hr
- 13%
- Avg finishers
- 60
90 ft / mi
5 mi loop
of finishers
per year
◈ From the runners