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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: the Pure Hell 140 (140 miles), 100-mile, 100K, and 20-mile races. The terrain is rugged single-track with significant elevation gains, making it the most elevation-intensive 100-mile race in Kansas. Runners complete multiple loops of a 20-mile course with aid stations at the start/finish and "Hell Hill." The race offers extensive support, including runner tracking, vegan food options, and professional photography. Awards and unique swag are provided, and pacers are allowed for the longer distances. 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
62 mi
6072 m+
100k
20 mi
2024 m+
20 Miler
Visit the organization's website for the most recent information.
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