North Texas Ultra

FEB
7
2026
Run the scenic Lost Creek Reservoir trails at Fort Richardson State Park in the North Texas Ultra, with distances from 5K to 100K and a 25K ruck option. Enjoy wide gravel trails, supportive aid stations, and finisher swag in mid February.
Sat 7 Feb 2026
100 kilometers 52 miles 50 kilometers 25 kilometers 10 kilometers 5 kilometers

Always double-check with the organizer's website! This page may contain affiliate links.

North Texas Ultra : event details

The North Texas Ultra is a trail event held at Fort Richardson State Park - North Park Unit in Jacksboro, TX (134 Trailway Drive). Distances offered are:

  • 100K
  • 52 Miler
  • 50K
  • 25K
  • 25K RUCK
  • 10K
  • 5K

Registration closes Fri, Feb 6. The event is part of the Texas Ultra Series.

Course and logistics

The course uses the Lost Creek Reservoir State Trailway. The trail is open and wide and is paved with soft fine gravel. The main loop is a 15.5-mile out-and-back; each loop has about 550 ft of elevation gain and loss. Historic mid-February temperatures at the site average about 35-60 degrees.

Pacers are allowed on the last two loops for the 100K and 52 Miler, and on the last loop for the 50K. There is a 20-hour cutoff for finishers. The 25K RUCK has weight requirements: runners over 150 lbs carry a 30 lb ruck, under 150 lbs carry a 20 lb ruck; ruck sack or vest is allowed.

Finishers receive a race shirt and collectible finisher medal; the 100K finisher receives a buckle. There are first-place awards for male and female in each distance and a DFL award for the 100K. Aid stations, course marking, and event photography are provided. Visit the organization's website for the most recent information.

100 km
100k
52 mi
52 Miler
50 km
50k
25 km
25k
25 km
25k Ruck
10 km
10k
5 km