Hell Creek Half & 50K

AUG
29
2026
Trail races on the single track Switchgrass Mountain Bike Trail at Wilson State Park, offering a 13(ish) mile half marathon and an approximately 32 mile 50K on exposed, hilly terrain.
Sat 29 Aug 2026
50 kilometers 13 miles

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Hell Creek Half & 50K

Both races take place on the single track Switchgrass Mountain Bike Trail at Wilson State Park. The trail runs largely beside Wilson Lake, is exposed with few wooded sections, and is described as very hilly but not overly rugged. Weather is a factor because much of the course has no heavy cover.

Two race distances are offered:

  • Half marathon: one 13(ish) mile loop with an initial 1/3 mile on pavement.
  • 50K: a 19 mile loop followed by the half marathon loop, totaling about 32 miles.

The course is heavily marked with ribbons and wrong-way signs. There are two full aid stations at the start/finish and at Hell Hill; both will stock Proxima C electrolyte/carbohydrate drink, water, soda, and typical ultra foods. An unmanned water and Proxima C station will be at mile 5, and another unmanned station is around mile 13 on the Hell Creek Loop for 50K runners. Volunteers will be present at Hell Hill to assist.

Cutoff durations are 9 hours for the 50K and 8.75 hours for the half marathon. Restrooms are at the start/finish, a porta-potty will be near the other full aid station, and hot showers are available year-round at Big Bluestem campground about 3/4 mile from the start/finish.

Awards and swag include 1st–3rd place male and female awards per distance, tank tops for entrants, a finisher medal for the half marathon, and a 50K belt buckle for 50K finishers. Shirt sizes are not guaranteed for entries within two weeks of the event. Visit the organization's website for the most recent information.

50 km
50k
13 mi
½ Marathon
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