Hell Creek Half & 50K

AUG
29
2026
Experience rugged but runnable single track along Wilson Lake at the Hell Creek Half and 50k, with exposed trails, big climbs and sweeping views. Courses are well marked with staffed aid stations and distinctive swag for finishers.
Sat 29 Aug 2026
50 kilometers 13 miles

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Overview

The Hell Creek Half & 50K takes place on the Switchgrass Mountain Bike Trail at Wilson State Park near Sylvan Grove, Kansas (GPS N38°54.965 W98°30.549). The single-track trail is exposed with few trees and runs alongside Wilson Lake. The course is described as rugged but runnable and is marked with ribbons, flags, and wrong-way signs.

Distances

  • Half marathon - one loop of about 13 miles; includes an initial 1/3 mile on pavement.
  • 50k - a 19-mile loop plus the half-marathon loop, totaling about 32 miles.

Course and aid

Elevation gain/loss: about 3000 ft for the 50k and about 1300 ft for the half marathon. There are two manned aid stations at the start/finish and at "Hell Hill." An unmanned water and Proxima C station is at mile 5, with another around mile 13 on the Hell Creek Loop (50k only). Proxima C Endurance Fuel is the electrolyte/carbohydrate drink provided. Volunteers are stationed at Hell Hill and the course is heavily marked.

Logistics and rules

Cutoff for both races is 5:00 PM. Crew access is limited to the start/finish; pacers are not allowed. Drop bags are permitted at Hell Hill and the start/finish. Minimum age is 16; under-18 runners need a guardian waiver. Runners must carry a means to hold water. State park day passes may be required. Swag: dri-fit tank top for all, half marathon finishers receive a medal, 50k finishers receive a buckle. Awards are given to the top three men and women in each distance. Refunds and bib transfers are not permitted; credit for cancellations is available on a staged schedule. Visit the organization's website for the most recent information.

50 km
50k
13 mi
1/2 Marathon