Texoma Challenge

JUN
6-7
2026
Night trail event at Waterloo Park in Denison, Texas offering distances from 5K to 50K plus relay and 10K ruck options. Rooty single-track loops, on-course aid stations, mandatory headlamp and a nine hour event cutoff.
6-7 Jun 2026
50 kilometers Marathon Half Marathon 10 kilometers 5 kilometers

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

Texoma Challenge : Waterloo Trails night event

Texoma Challenge is a night trail event held at Waterloo Park in Denison, Texas. The event offers multiple distances on rooty and dirt single-track trails that loop through the Waterloo Trails system. Each loop features rolling hills with about 500 feet of elevation gain per loop. Historic average temperatures for the event are about 68 to 80 degrees.

Distances offered:

  • 5K
  • 10K
  • Half Marathon
  • Marathon
  • 50K
  • 50K Relay
  • 10K Ruck

Aid is available on course. A water-only station is listed near mile 3.7 and main aid stations are located at mile 0 and mile 6.2. Main aid stations provide hot and cold foods, snacks, water, electrolytes, pickle juice and ice. Drop bags may be placed near the start and finish area and participants are responsible for their own bags. Parking is limited to the west side of Waterloo Lake Drive and nearby baseball field lots.

Safety and gear requirements include a required headlamp for all events, a required water carrying system since this is a no-cup race, and specific ruck weight rules: 30 lb for participants over 150 lb and 20 lb for participants under 150 lb. There is a nine hour cutoff for all events. Relay teams consist of one to five people with each leg run as a 10K loop. Visit the organization's website for the most recent information.

50 km
50k Relay
50 km
50k
Marathon
Marathon
Half Marathon
Half Marathon
10 km
10k
10 km
10k Ruck
5 km
Add Event
Help us complete the calendar!
  • Distance is at least 5 km
  • Event has a website or Facebook page
Website
Optional: Please provide your e-mail address if we may contact you.
Report a change
We will only update the data if the information is also on the website.