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Hell Creek 100

Sat October 1, 2022 Sylvan Grove, KS 67481 US Directions


100 Miler

6:00AM CDT


7:00AM CDT

20 Miler

8:00AM CDT

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Race Website

Additional race information can be found at


switchgrass mountain bike trails
Sylvan Grove, KS US 67481



THE HELL CREEK 100, 100k, and 20-miler

Presented by Ultraverse Supplements

Starting Dates

THE PURE HELL 140 – Friday September 30

THE HELL CREEK 100, 100k, and 20 miler - Saturday October 1, 2022

Start times

PURE HELL 140 – 5:00 PM Friday

100 miler – 6:00 AM Saturday

100k – 7:00 AM Saturday

20 miler – 8:00 AM Saturday


THE PURE HELL 140 – Friday 4:00 – 4:45 PM (just prior to race start)

THE HELL CREEK 100, 100k, and 20 miler – Early Check-in - Friday prior to the race at the start/finish - 5:30 – 7:30PM. Same day check-in - 100 milers – 5:00 – 5:50 AM 100k – 6:15 - 6:50 AM, 20 miler – 7:15-7:50 AM

Location – The start and finish will be located at the Switchgrass trail head (Hell Creek area) which is located near the Switchgrass Restroom parking lot.

GPS: N38°54.965 W98°30.549

Map of Location -'57.9%22N+98%C2%B030'32.9%22W/@38.9160833,-98.5113387,17z/data=!3m1!4b1!4m5!3m4!1s0x0:0x0!8m2!3d38.9160833!4d-98.50915?hl=en

Giving Back – We LOVE the Switchgrass trails! 2% of everyone’s entry fees will be donated back to Switchgrass for trail maintenance/improvement as a token of our appreciation.

For additional race information see our website race page at


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 plentiful.

KS 100 Milers Elevation Gain Stats

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

The races will consist of 20(ish) mile loops – one loop for 20 milers, three loops for 100k runners, 5 loops for 100 milers, and 7 loops for 140 milers. Switchgrass is purely single track so we will start the runners about ½ 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.

Aid Stations – There will be two aid stations. One you will have the opportunity to visit twice per loop. The main aid station will be at the start finish and the other will be around 10.5 miles and 16.75 miles of the loop. Both will include your typical aid station items – food (vegan options), water, soda, and electrolyte drink. Both aid stations will have some hot food items at night as well. There will be 1 unmanned water station at mile 5. We will do our best to take care of you, however this is an ultra-marathon…you won’t be pampered. Please make sure you are adequately prepared.


20 milers – Shirt with race logo/sponsors and a drawstring bag. Finishers will receive a distance-specific medal and a beer from Wichita Brewing Co.

100k – Shirt with race logo/sponsors, 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 customized with runners name, 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.

PURE HELL 140 milers – Pure Hell 140 long sleeve shirt, Pure Hell puffy jacket customized with runners name. Pure Hell finishers buckle. Finishers will also receive a beer from Wichita Brewing Co.

*Additional small freebie items will be included in swag bags. Swag subject to change depending upon availability.

**Correct shirt sizes are not guaranteed for entries within 2 weeks of the race. Additional merchandise can be purchased at



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


Drop Bags- Drop bags are allowed at both manned aid stations.

Pacers – Pacers are allowed on THE PURE HELL 140 and Hell Creek 100 miler ONLY. Pacers are allowed after 3 laps, approximately 100k. No muling (carrying ANYTHING for your runner). Pacers can start only at MANNED aid stations. Pacers are not allowed to grab something at an aid station and take it to their runner ON COURSE. Runners must carry 100% of their food, drink, and gear. If they want something from the aid station, they MUST make the trip to the aid station. There are no exceptions to this rule and breaking it will result in disqualification.

Crew is only allowed at MANNED aid stations. Crew may not assist runners anywhere except for the two manned aid stations. Any assistance outside of the main aid station will result in disqualification – no warnings, no exceptions

You MUST CROSS the finish line every loop.

Cutoffs –


100k – 7:00 AM Sunday (24 hours)

100-mile - 2:00 PM on Sunday (32 hours)

PURE HELL 140 – 7:00 PM Sunday (50 hours)

Pure Hell 140 runners MUST have STARTED their last (7th) loop by 2:00 (45 hrs) on Sunday

This is a state park and you will need a day pass or an annual pass. If you don't have one, you’ll likely be fined. You can purchase one on the way into the park.

Minimum age of 21 years old to race.

You may change to a different distance prior to Sept. 14th. If you change to a cheaper distance you will not be refunded for the difference. If you change to a more expensive distance you must pay the difference.

If you cannot attend please let us know at least three days prior to race start and we will take your name off of the entrants list/results. If not prior to three days of race start you will be listed as DNS on the results.

We DO NOT allow runners to drop distances after starting the race. If you start the 100 miler, you either complete it, or you DNF. Same goes for 100k participants in regards to dropping to the 20 mile. THE RACE YOU START IS THE RACE YOU MUST FINISH.

If you litter you will be disqualified.

If you cut the trail you will be disqualified.

No whining or complaining. ;).

Race Cancellation – In the event the race is cancelled due to severe weather, or other uncontrollable circumstances we cannot offer refunds. Everything is typically already paid for at this point. That being said, it is highly unlikely, and we will do everything in our power to make sure the race happens. If the trail is in a condition (muddy, etc.) where running on it would do unnecessary harm to the trail, we will find an alternate route.


More information to come…please join our FB group for the most up-to-date info.

Kansas Grand Slam and Ultra Slam

The Hell Creek 100 and the Pure Hell 140 are eligible races for the KS grand slam of 100's.

EITHER the Hell Creek 100 OR the Pure Hell 140 (if you're exceptional crazy) are REQUIRED for the KS Super Slam.


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