140-mile, 100-Mile, 100K, and 20-Mile Options 

Welcome To The Hell Creek Race Series!


Download for information on rules, aid stations, drop-bags, lodging, and everything else you NEED to know prior to race day!

Join our Facebook group for all the latest information https://www.facebook.com/groups/1298825163827538

100-miler begins Saturday, September 30, 2023 at 6 AM

100K begins Saturday, September 30, 2023 at 7 AM

20-miler begins Saturday, September 30, 2023 at 8 AM

All runs will take place on the single-track, Switchgrass Mountain Bike Trail, at Wilson State Park.  If you’ve never run this trail you are in for a treat.  Switchgrass is very hilly, but not overly rugged.  Much of the trail runs directly beside beautiful Wilson Lake, the clearest lake in Kansas.  The trail is totally exposed, with no heavily wooded areas.   This makes for beautiful views, but also total exposure to the weather!  The 100 miler has more elevation gain and loss than any of the other 100 milers in Kansas, so if you’re looking for a challenging course in the “flatlands” you’ve found it!  We are very excited to give you the opportunity to run on this amazing trail and believe it is the perfect addition to the other amazing ultras being put on in KS.

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Hell Creek 100


The Pure Hell 140 is the LONGEST race in Kansas!

Starts Friday, September 29, 2023 at 10:00 AM.

  • 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.

Hell Creek 100

Elevation Gain/Loss

  • 100 Miler – 10,120ft
  • 100K – 6,072ft
  • 20 Milers – 2,2024ft
Kansas 100 Milers

Elevation Gain Comparison

Hell Creek 100 10,120 feet
Hawk Hundred 9,360 feet
Heartland 100 6,000 feet
KRT Extravaganza 100 1,541 feet
Prairie Spirit 100 1,541 feet
Honey Badger 100  1,332 feet
Hell Creek 100

Race Logistics

The races will consist of 20(ish) mile loops with no repetition.  One loop for 20 milers, three loops for 100k runners, 5 loops for 100 milers, and 7 loops for 140 milers. Switchgrass is a purely single-track trail so we will start the runners about a ½ mile from the trailhead to give everyone a chance to spread out. After that, it is 100% trail-running. 

The course will be heavily marked with ribbons and wrong-way signs. This is an extremely easy course to follow. Getting off course should be of no issue.

Restrooms/showers – There are restrooms at the start/finish, and we will have a porta-potty (or two) near the other full aid. There are hot showers open year-round at Big Bluestem campground, about 3/4 mile from the start/finish.

Proxima C will be the electrolyte/carbohydrate drink at both aid stations.

Photography: We WILL have professional photography at the race!  All pictures will be available for FREE download within 1-2 weeks of the race.

Hell Creek 100

Swag and Awards

Awards – 1st, 2nd, and 3rd place male and female in each distance will receive special awards.

Swag – Correct shirt sizes are not guaranteed for entries within 2 weeks of the race.  Entries within 2 weeks for the 100 will not have their name on the vest.  Additional merchandise can be purchased at https://ultrasignup.com/shopping.aspx?dtid=42902

  • 20 milers – Shirt with race logo/sponsors , sticker, and a drawstring bag.  Finishers will receive a distance-specific medal and a beer from Wichita Brewing Co.
  • 100k – Shirt with race logo/sponsors, sticker, drawstring bag, and stainless steel can koozie.  Finishers will receive a distance-specific 100k buckle and a beer from Wichita Brewing Co.
  • 100 milers – Shirt with race logo/sponsors, a Hell Creek 100 mile fleece vest, sticker, and drawstring bag.  Finishers will receive a distance-specific 100-mile buckle and beer from Wichita Brewing Co.  Sub-24 hour finishers will receive a sub-24 buckle in place of the traditional 100-mile buckle. 
  • 140 milers – Pure Hell 140 shirt, sticker, bib belt, fleece jacket, drawstring bag, and Pure Hell 140 finisher’s buckle. Finishers will also receive a customized Pure Hell 140 puffy jacket with their name embroidered on it and a beer from Wichita Brewing Co.
  • Additional small freebie items will likely be included in swag bags.

Additional Sponsors

Wichita Brewing Company

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Lake Wilson Marina

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