Mighty Mo Run
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Mighty Mo Run - Event overview
The Mighty Mo Run takes place Friday, September 11 to Sunday, September 13, 2026 in Sioux City, Iowa. The event includes multiple race options and a youth run.
- Full Marathon (Tri-State Marathon returning in 2026)
- Half Marathon - 13.1 miles
- 10K - 6.2 miles
- 5K - 3.1 miles
- Kid’s Fun Run - 12 & under
A new element called "The Stooge" offers a unique award for participants who run all three days. Participants across the event receive a unique t-shirt covering Friday through Sunday.
Course, organization, and proceeds
Race activities start and finish at the Seaboard Triumph Foods Expo Center and continue on the Missouri River Trail adjacent to the center. Course maps are provided, including a half marathon map along the river in South Sioux City and Sioux City. The half and full marathon courses are described as certified.
Proceeds from the event support the H.A.R.T. Foundation (Helping Athlete’s Run & Train). Sponsors include local and regional partners such as Seaboard Triumph Foods. Visit the organization's website for the most recent information.