Articles

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Tuthell 50K

Name: Tuthell 50K
Start: 2026-05-02
End: 2026-05-02
Location: Sioux Falls

Sioux Falls, United States • 2 May 2026

The TutHell 50K is a unique ultramarathon held in Sioux Falls, South Dakota, featuring a challenging course that consists of running a 0.31-mile loop up and down Tut Hill 100 times. The course includes approximately 90 feet of elevation gain and loss per loop, traversing grassy terrain with a well-marked single track. The race emphasizes community and support, requiring runners to stay until the last participant finishes or drops out within a 12-hour cutoff. Registration is by essay submission, with a free-will donation pledged to the winner’s chosen nonprofit. Aid stations and support crew access are provided, along with official chip timing and live tracking. Visit the organization's website for the most recent information.

United States South Dakota Sioux Falls

Race information

Website Registration

50 km

9000 m+

50k

Visit the organization's website for the most recent information.

Trail runs nearby

Saturday Aug 9

605 Trail Fest

The 605 Trail Fest will take place in Sioux Falls on Saturday 9 August 2025. You can run between 4 and 8 miles.

Fri - Sun Aug 29-31

The Blood Run - Lennox, SD

Lennox - 15 mi from Sioux Falls

Backyard Ultra

...

The Blood Run in Lennox, South Dakota, is a unique endurance running event held on a 1.5-mile loop around an organic vegetable farm. Participants can choose from 3, 6, 12, 24, or 36-hour races, including a 24-hour 4-person relay. The mostly flat course features well-traveled dirt paths and some past..

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Saturday Oct 11

Newton Hills Trail Race

Canton - 18 mi from Sioux Falls

2 mi

6 mi

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Duff Dog Backyard Ultra

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Backyard Ultra

4 mi

The Duff Dog Backyard Ultra is an endurance running event held at Blue Mounds State Park near Luverne, Minnesota. The race features a runner-friendly loop course primarily composed of grass trails, with some gravel and a short paved section, covering a distance of 4 miles 880 feet (6.7 km) per loop...

Saturday Oct 25

Trick or Treat Trail Run 10K

The Trick or Treat Trail Run 10K, held annually in Sioux Falls, South Dakota, takes place at Pasley Park along the scenic Big Sioux River bike path. This festive event offers a 10K run, a 5K run/walk, and a Candy Dash for children aged 3-10, featuring a 0.5-mile course. Participants enjoy a fun, fam..