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ultrasignup.com

Hell Creek 100

calendar_today 30 Oct, 2026 – 01 Nov, 2026

directions_run Running

sell $80.00 – $625.00

Hell Creek 100

About the Event

GENERAL INFO

THE HELL CREEK 100-mile, 100k, 20-mile, 10k and THE PURE HELL 140 Presented by Ultraverse Supplements Starting Dates THE PURE HELL 140 – Friday, October 30, 2026 THE HELL CREEK 100, 100k, 20 miler, and 10k – Saturday, October 31st, 2026 Start times PURE HELL 140 – 10:00 AM Friday 100 miler – 6:00 AM Saturday 100k – 6:30 AM Saturday 20 miler & 10k – 7:30 AM Saturday Check-in THE PURE HELL 140 – Friday 9:15 – 9:50 AM (just before race start) THE HELL CREEK 100, 100k, and 20 miler – Early Check-in - Friday before the race at the start/finish from 5:00 – 8:00 PM. Same day check-in - anytime prior to 15-minutes before your race start 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 For additional race information, see our website race page at https://ultraversesupplements.com/our-races Runner tracking (every 20-miles) will be available during the event. Professional Photos by Limping Deer Photography! Veteran and active military discount available! Reach out to us BEFORE registering for 10% off any race. This cannot be applied after registering.

NEW RACE DATE

HELLOWEEN AT HELL CREEK! Fun new additions include a costume contest, cooler weather, and a Hellish Halloween vibe. Those who would like to compete in the costume contest must wear their costume for at least one full loop ON HALLOWEEN (10k and 20-mile must wear for the duration of their race). Costume contest prizes 1st place - $150 Ultraverse Race Credit 2nd place - $75 Ultraverse Race Credit 3rd place - $50 Ultraverse Race Credit Winners will be determined by votes accumulated by Volunteers and RD's.

COURSE DESCRIPTION

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. Elevation Statistics 10k - 442 ft 20-mile – 2,024 ft, 100k – 6,072 ft, 100-mile - 10,120 ft, Pure Hell 140 – 14,168 ft The races will consist of 20-mile loops – one loop for 20-milers, three loops for 100k runners, 5 loops for 100-milers, and 7 loops for Pure Hell 140-milers. The 10k has a well-marked special cutoff. The course will be heavily marked with ribbons, flags, and wrong-way signs. This is an extremely easy course to follow. Getting off course has not been an issue. Aid Stations – There will be two aid stations – the start/finish and “Hell Hill.” Hell Hill you will have the pleasure of visiting twice per loop. The main aid station will be at the start/finish area and Hell Hill is 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. The furthest one must go without access to water is 6.25 miles. Note - The 10k does not hit any aid. It's only a little over 6-miles...you'll be alright ;)

SWAG

10k - Shirt with race logo/sponsors and a draw string bag. Finishers receive a distance specific medal and a beer. 20 milers – Shirt with race logo/sponsors and a draw string bag. Finishers will receive a distance specific medal and a beer. 100k – Shirt with race logo/sponsors, drawstring bag, and a coffee mug.  Finishers will receive a distance-specific 100k buckle and a beer. 100 milers – Shirt with race logo/sponsors, and BOCO Pom Beanie, Finishers will receive a distance-specific 100-mile buckle and a beer.  Sub-24 hour finishers will receive a sub-24 buckle in place of the traditional 100-mile buckle. PURE HELL 140 milers – 140 milers – Pure Hell 140 shirt, Pure Hell Sun Hoodie, and a drawstring bag. Finishers will also receive a Pure Hell 140 finishers buckle and a beer. *Additional small freebie items will be included in swag bags **Correct shirt sizes are not guaranteed for entries within 4 weeks of the race. Additional merchandise can be purchased at the ultrasignup store. FUR-BABY AWARDS! If your pup (or cat) runs with you, we will give him/her a pup-specific Hell Creek medal that can be worn on a leash/harness! AWARDS 1st, 2nd, and 3rd place male and female in each distance will receive special awards.

NEW 5-Person 100-Mile Relay

Each person runs one full 20-mile loop. Runners will switch out at the start/finish line. • 2 allowed start times – 10 AM on Friday (52 hour cutoff) or 6 AM on Saturday (32 hour cutoff) • All runners will receive a shirt WITH TEAM NAME (keep them dirty), a badass finishers BUCKLE, a drawstring bag, and a finishers beer! • No pacers for the relay. • Crew is allowed only at start/finish • Drop bags are allowed at Hell Hill With the generous cutoff, teams can come knock this 100 out however they see fit. You can walk the whole thing, enjoy the HELLoween vibes, and the beautiful views of the Hell Creek course. There are no place awards for the relay.

RULES

CUTOFFS 20-mile – 6:00 PM Saturday (10 hours) 100k – 7:00 AM Sunday (24 hours) 100-mile - 2:00 PM on Sunday (32 hours) PURE HELL 140 – 2:00 PM Sunday (52 hours) 100-mile AND Pure Hell 140 runners MUST have STARTED their last (5th or 7th) loop by 9:00 AM on Sunday 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 Crew is only allowed at the two MANNED aid stations. 20-milers are NOT allowed crew at Hell Hill. 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 Runners MUST CROSS the finish line every loop before heading to their crew areas. No special start/finish times – you must start with YOUR race! Beer and aid station food is for volunteers and runners only. This is a state park, and you will need a Kansas State Park day pass or an annual pass. If you don't have one, you may or may not be fined. Please don’t ask us if you need one. It’s your call. You can purchase one on the way into the park. Minimum age of 18 years old to race. You are allowed to change to a different distance. This can be done (by you) on Ultrasignup by editing your registration. If you change to a cheaper distance, you will not be refunded for the difference. If you change to a more expensive distance, you will be directed to the cart, where you will 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. If you do not tell us at least three days before 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. NO EXCEPTIONS. If you litter, you will be disqualified. If you cut the trail, you will be disqualified. You must carry a means to hold water at all times. No whining or complaining. ;). It’s supposed to be hard. It might be hot, it might be cold, and the wind might blow. If you’re prepared you’ll be OK. 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. NO REFUNDS NO BIB TRANSFERS Please join our FB group for the most up-to-date info - https://www.facebook.com/groups/1298825163827538 Proxima C Endurance Fuel will be our sole carbohydrate and electrolyte beverage. It is the best ultra-fuel there is! If you haven’t tried it, get some here - https://ultraversesupplements.com/products/proxima-c-endurance-fuel.

Sofa King Awesome Slam

We have teamed up with Elden Galano and Kansas Ultrarunners' Society to bring you the Sofa King Awesome Double! Sign up for one of the Hell Creek races AND a Heartland race and earn an extra buckle for completing them both. Which buckle you earn depends on the distances signed up for. Check out the Heartland series here - https://ultrasignup.com/register.aspx?did=91025. It's going to be Sofa King Awesome!

Deferral & Withdrawal

DEFERRAL/WITHDRAWAL INSTRUCTIONS 100% credit if canceled prior to 45 days of the race. 75% credit if canceled prior to 30 days of the race. 50% credit if canceled prior to14 days of the race. no credit is given for cancellations less than 2 weeks prior to the race. You’ll still be listed as DNS if notification is not given prior to 3 days before the race starts. Please understand that there are no exceptions to these timelines. Please, don’t ask us to make one (we won’t). •Races should deferred/withdrawn from BY THE RUNNER, rather than by messaging/emailing us. • You will earn credit for ANY Ultraverse Supplements race, rather than being limited to the race in which you cancelled/deferred. • The credit will be attached to your Ultrasignup account and will automatically apply the next time you register for an Ultraverse Supplements event. Note - sending an email to us does not initiate the cancellation of your registration. You must do this yourself for the credit to apply. You can do this by signing into Ultrasignup and then going to your registrations and clicking “edit”. • Your credit appears in your registration history under "outstanding credits and coupons". • Credit will be valid for one year, cannot be “gifted” to another runner, and you must use the same Ultrasignup account in which you originally registered for the race that you withdrew from. You can see all Ultraverse Supplements races at www.ultraversesupplements.com.

Races Offered

Pure Hell 140

Oct 30, 2026

straighten

Distance — Pure Hell 140

terrain

Type — Running

timer

10:00

sell

$355.00

100 Miler

Oct 31, 2026

straighten

Distance — 160.9K

terrain

Type — Running

timer

06:00

sell

$290.00

5-Person Team 100

Oct 31, 2026

straighten

Distance — 5-Person Team 100

terrain

Type — Running

timer

06:00

sell

$625.00

100K

Oct 31, 2026

straighten

Distance — 100K

terrain

Type — Running

timer

06:30

sell

$220.00

10k

Oct 31, 2026

straighten

Distance — 10K

terrain

Type — Running

timer

07:30

sell

$80.00

20 Miler

Oct 31, 2026

straighten

Distance — 32.2K

terrain

Type — Running

timer

07:30

sell

$125.00

Weather History

These values represent the 3-year monthly averages for October in Sylvan Grove.

thermostat Temperature
11.2° / 22.4°
wb_sunny Feels like
7.5° / 18.5°
light_mode Avg sunshine hours
9h 16m
water_drop Avg rainfall
1.2 mm
ac_unit Avg snowfall
air Avg wind speed
16.2 km/h (Gentle breeze)
opacity Sweat loss rate
Moderate
terrain Course conditions
Firm and slightly soft
sunny Max UV Index
Moderate (4.0)
humidity_mid Humidity
53.7%
wb_twilight Sunrise
07:44
nightlight Sunset
18:53

About Sylvan Grove

Learn more about the host city, Sylvan Grove.

Scenic view of

Sylvan Grove is a city in Lincoln County, Kansas, United States. As of the 2020 census, the population of the city was 291.

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Hotels & Places to Stay

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