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Hell Creek 100

Dorrance, United States • 3-5 Oct 2025

The Hell Creek 100 is an ultramarathon event held at Wilson State Park near Sylvan Grove, Kansas, featuring challenging courses on the Switchgrass Mountain Bike Trail. The event includes multiple distances: Pure Hell 140 miles, 100 miles, 100 kilometers, and a 20-mile race. The course is rugged single-track with significant elevation gain, making it the most elevation-intensive 100-mile race in Kansas.

Runners complete multiple 20-mile loops with aid stations at the start/finish and "Hell Hill." The race offers extensive support, including runner tracking and professional photography. Participants receive distance-specific swag and awards, with pacers allowed for the longer distances. The event emphasizes strict rules and a tough but scenic experience. Visit the organization's website for the most recent information.

United States Kansas Dorrance

Race information

Website Registration
140 mi
14168 m+
Pure Hell 140
100 mi
10120 m+
100 Miler
100 km
6072 m+
100k
20 mi
2024 m+
20 Miler
Visit the organization's website for the most recent information.
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