Dinosaur Valley 100 Mile
Dinosaur Valley 100 Mile loops through a North Texas state park, accumulating gradual climbs and technical fatigue across rocky, mixed trail.
Quick facts
- Mandatory 7:00 a.m. start
- Dinosaur Valley State Park loops
- Mixed rocky and runnable trail
- Gradual rollers that grow harder each lap
Is registration open for the 2026 Dinosaur Valley 100 Mile?
Registration for the 2026 Dinosaur Valley 100 Mile is open.
About the Dinosaur Valley 100 Mile
A mandatory 7 a.m. start sends the independently scored 100-mile field out ahead of Dinosaur Valley's 100K and shorter races.
Course
Repeated state-park loops combine gradual rollers, rocks, roots and runnable dirt, with modest features becoming harder late in the race.
Race-day weather
Late November may be cool and dry, but Texas can also produce warmth, wind, rain or a sharp overnight temperature drop.
Past Dinosaur Valley 100 Mile dates and results
| Year | Date | Status | Results |
|---|---|---|---|
| 2026 | Saturday, November 21, 2026 | Upcoming | — |
| 2025 | — | Completed | Open results |
| 2024 | — | Completed | Open results |
Dinosaur Valley 100 Mile FAQ
When is the Dinosaur Valley 100 Mile?
The 2026 Dinosaur Valley 100 Mile is on Saturday, November 21, 2026.
Is registration open for the 2026 Dinosaur Valley 100 Mile?
Registration for the 2026 Dinosaur Valley 100 Mile is open. View the official registration details at ultrasignup.com.
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