Texoma Challenge
June 6th 2026
Denison, TX
50 KM
Event Overview
The Texoma Challenge is an endurance event featuring a 5K, 10K, 10K Ruck, Half Marathon, Marathon, 50K, and 50K Relay in the foothills of North Texas at Waterloo Park. The event follows 6.2 mile loop of unique trails beginning and ending in Waterloo Park in Denison Texas.
Course Overview
- Surface: Rooty & dirt single-track trails.
- Course: Waterloo Trails
- Elevation: Rolling hills 500 ft elevation gain per loop.
- Location: Waterlooo Park (1101 Waterloo Lake Dr, Denison, TX 75020)
- Weather: Historic Average shows 68-80 degrees
- No Cup Race: We don't serve cups, please make sure to bring your own water-carrying system!
Upcoming Races
Jun 6 2026
50 KM
5x10k loops
2,500
2,500
ft.
Multiple Loop
9:00 Cutoff
3
Elevation Rating
Hilly, ~2500-7500 feet in 50 miles
3
Surface Rating
Some rocks, root, and/or ruts
Additional Distances
This event also has the following sub ultra distances
26.2 Miles
10 KM
13.1 Miles
5 KM
Results
50 KM
| Date | Finishers | Top Result (F) | Top Result (M) |
|---|---|---|---|
| 06/07/25 | Race Cancelled | ||

