Hell Creek 100

Race Details

October 4, 2025
Sylvan Grove
Kansas
20M
100K
100M
140M
imagw

All runs will take place on the Switchgrass Mountain Bike Trail at Wilson State Park. The 100 has the most elevation gain and loss of any 100-miler in Kansas! If you’re looking for a challenging course in the “flatlands” you’ve found it. The trail is easy-to-follow, rugged, single-track with very few trees/wooded areas. Beautiful views of Wilson State Park and Wilson Lake are abundant.

Start times:

100 miler – 6:00 AM Saturday, October 4, 2025
100k – 7:00 AM Saturday, October 4, 2025
20 miler – 8:00 AM Saturday, October 4, 2025

Pure Hell 140 Mile Race
Friday, October 3, 2025 at 10am.
52 hour cutoff
A previous 100-mile finish is required for sign-up for THE PURE HELL 140 (any 100-mile race will do). If you have a completed a 100 on Ultrasignup feel free to just sign-up. If you have completed a 100 miler (that you can prove) that was not listed on Ultrasignup please reach out to us prior to sign-up to learn what steps to take.

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