Night Claw

JUL
17
2027
Night Claw is a nighttime trail race at Dinosaur Valley State Park offering 5K, 10K, 20K, 10K Ruck and 4/6/8 hour timed events plus an optional Claw Challenge.
Sat 17 Jul 2027
20 kilometers 10 kilometers 5 kilometers

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Night Claw

Night Claw is a nighttime trail event held on the trails of Dinosaur Valley State Park with the start and finish staged in a field outside the park near Glen Rose, Texas. The event offers looped and point-to-point options, including several timed race formats and a ruck division. The course runs over dirt and rocky single-track trails and includes a river crossing; the 10K loop shows about 650 feet of elevation gain. Historic night temperatures for the event range from about 75 to 95 degrees.

Distances available:

  • 5K
  • 10K
  • 20K
  • 10K Ruck
  • 4 Hour timed race
  • 6 Hour timed race
  • 8 Hour timed race

All participants must carry a water system (16-ounce minimum except for the 5K) and wear a headlamp. Ruck weight rules apply: runners over 150 pounds use a 30 lb ruck, runners under 150 pounds use a 20 lb ruck; a ruck sack or vest is allowed. Aid stations and water stations are positioned on course and provide cold foods, snacks, water, electrolytes, pickle juice and ice; water stations offer water and ice only. Drop bag transport to aid stations is not provided; drop bags may be left at the start/finish area.

The optional Claw Challenge is an opt-in feature. Participants who choose it receive a bib with a tear tag; a designated runner called the Claw pursues competing participants and may take tear tags. Finishers with their tag intact are recorded as ESCAPED, while those whose tag was taken are recorded as CLAWED. Event gear and awards include a Night Claw tri-blend tee, finisher medal with Claw attachments, podium awards for distance winners, most-loops awards for timed events, and a 10K Ruck finisher patch. Pacers are allowed for the 6 Hour and 8 Hour races during the final two hours of those events. Visit the organization's website for the most recent information.

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