Night Claw

AUG
15
2026
A nighttime trail race at Dinosaur Valley State Park with multiple looped distances and timed events. An optional Claw Challenge adds a bib tear-tag chase that determines special medal add-ons.
Sat 15 Aug 2026
8 hour 6 hour 4 hour 10 kilometers 4 miles 5 kilometers

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Night Claw - Glen Rose, TX

Night Claw is a nighttime trail race held at Dinosaur Valley State Park with a field staging area outside the park. The course uses dirt and rocky single-track trails and includes a river crossing. The terrain is hilly; the 10K loop shows about 650 ft of elevation gain. Historic nighttime temperatures are reported in the 75-95 degrees range.

Distances and formats offered include:

  • 5K
  • 10K
  • 4-mile special loop
  • 4-hour timed race
  • 6-hour timed race
  • 8-hour timed race

Many distances run on a 10K loop. Aid stations supply cold foods, snacks, water, electrolytes, pickle juice, and ice; separate water stations offer water and ice. Drop bag transport to aid stations is not provided; participants may leave drop bags at the start/finish area. Headlamps are required for all events. A water carrying system is required for all distances with a 16-ounce minimum except for the 5K.

The Claw Challenge is an optional add-on. Participants who opt in receive a unique bib with a tear tag and may be chased by a designated volunteer runner dressed as the Claw. If the tear tag remains intact at the finish the runner is recorded as having beaten the Claw; if the tag is taken the runner is recorded as clawed. Finisher medals, medal add-ons for the Claw Challenge, a tri-blend race tee, podium awards for men and women, and a last-place award for the 8-hour event are listed as event awards. Visit the organization's website for the most recent information.

8 hr
8hr
6 hr
6hr
4 hr
4hr
10 km
10k
4 mi
5 km