Firecracker Trek Denison

Monkey Butt Mayhem is a timed trail challenge on a short, steep loop in Texas. Runners choose a 3 or 6 hour limit to complete as many loops as possible, conquering the infamous 100 foot climb on Monkey Butt Hill. Crews can set up every thir..

The Texoma Challenge offers a range of distances on a scenic 6.2-mile trail loop at Waterloo Park in Denison. This nighttime event requires a headlamp and is part of the Texas Summer Night Series. All participants get a t-shirt, with finish..

A multi-distance running event at Waterloo Lake Park on October 10, 2026, offering 5k, 10k, half marathon, marathon and 50k on looped courses with two aid stations, guaranteed shirts for timely registrants, and medals for finishers.

A last-man-standing trail race at Walnut Creek Resort in Gordonville, TX, run as repeated 4.5-mile loops until one runner remains. Field limited to 60, with a $1000 prize for the final winner and special belt buckles for long distances.