- Location: Tuthill Park, 3500 S Cliff Ave, Sioux Falls, SD 57103
- Date: May 2nd 2026
- Time: 6:00 AM – 4:07 PM (10 Hour 7 Min Cutoff)
- TutHill Park Opens at 5:00 AM
- Participant Cap: 40-50
Submissions open December 1, 2025
- Essay Only Format (no general registration) You will submit an essay with the above link. Your essay explains why you want to run this race. TutHell 50K Committee will review your essay and if you are selected, you will get a link to register for the race. Essay Window for 2026 is December 1, 2025 through April 22, 2026.
- Registration Fee = Free Will Donation Pledge see below.
2025 TutHell Results
Champions – Jessi Rakness & Jeff Pratt
Course Records: 7:18:43 F | 5:14:09 M
View all of the 2025 race results on Ultra Signup.
2025 winner’s chose these charities.
Thank you Ashley Korzan! Korzan Customs Photography
Racer Information
The concept is simple, though not easy – you will perform the 0.31-mile loop up and down Tut Hill (grassy part) 100 times. This is roughly 90 feet of elevation gain and 90 feet of elevation loss. Trekking poles allowed. No Teams. No Whining. Route will be well marked. Route Map below.
Free Will Donation Registration Fee | In lieu of a registration fee, entrants will pledge funds that will be split between the winning runners’ charities. The donations will be pooled in a Charitable Fund and your donation will be fully tax deductible. Runners should honor their pledge before race day. The link for this Charitable Fund will be provided in the coming weeks. After the race when male/female champions are crowned, their charities will be sent the funds from the Charitable Fund. The goal for 2026 TutHell 50K is $10,000 ($5,000 per charity)
All Entrants are asked to stay until the last runner has either dropped out or missed the 10 hour 7-minute cutoff. This race is about building community, fellowship and supporting one another.
There will be a fully stocked aid station at the top of the hill by the bathrooms/storm shelter. Runners are encouraged to bring their own race fueling.
Runners are asked to bring one support person to help them throughout the day. Support people have access to snacks.
Official Race Chip Timing and Live Tracking through UltraSignup.
Race Course – You will start up by the large tree close to the bathrooms at the top of the hill, follow the single track down the hill to the flat grassy part and then come up the right side of tut hill up to the two little trees where you will go left back to the start. – Race Course
****Registration – Because you will get an invitation to register for this race, the open registration on Ultrasignup.com does not work. you are able to bypass it with the invitation provided by the race director.
Contact Us / Volunteer
Email our team at tuthell50k@gmail.com.