Mighty Mo Run
About this race
Mighty Mo Marathon – Sioux City’s Premier Running Event
The Mighty Mo Marathon is back with an all‑new, flat, runner‑friendly three‑state course—and for the first time ever, prize money is on the line. Sioux City’s signature running event features something for every athlete: Kids Run • 5K • 10K • Half Marathon • Full Marathon • The “STOOGE” Challenge All events offer flat, fast, and fun routes.
Starting and finishing inside the Siouxland Expo Center, runners will enjoy scenic miles along the Missouri River Trail, complete with shade, smooth surfaces, and plenty of space to fly.
Proceeds support the H.A.R.T. Program (Helping Athletes Run & Train), empowering athletes of all ages and abilities.
Course Highlights
Half Marathon: Returns to its popular flat and fast out‑and‑back design.
Full Marathon: Newly redesigned course with beautiful river views, abundant shade, and an indoor start/finish experienc
Join fellow runners on September 11, 2026 for the Mighty Mo Run. It's a fantastic 5K, 10K, 1K, Half-Marathon, Marathon featuring a flat and fast course in Sioux City.
Pick your distance
Running
Sioux City Mighty Mo 5K
The "STOOGE" Run 5K - 10K - Half Marathon
Run the 5K, 10K & Half Marathon or Full Marathon, Run ALL 3 Days for One Price and Receive a Unique Finisher's Award.
Sioux City Mighty Mo 10K
1K Kid's Run
Sioux City Mighty Mo Half Marathon
Sioux City Mighty Mo Full Marathon
Weather Overview
These values represent the 5-year monthly averages for September in Sioux City.
About Sioux City
Mighty Mo Run takes place in Sioux City, Iowa, United States. The local timezone is America/Chicago.
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🏃 Plan Your Next Race in Sioux City
Find upcoming events by distance:
- Sioux City 5K Races Best Sioux City routes for beginners and speed work.
- 10K Run Events in Sioux City The most popular local distance in Iowa.
- Sioux City Half Marathons Top-rated 21.1K courses in the Sioux City area.
- Marathons in Sioux City Scenic 42.2K routes and Sioux City Boston qualifiers.
- Sioux City Running Calendar 2026 See all upcoming race dates.
Race information has been sourced from the event's official website and other publicly available resources. For the most up-to-date details, please refer to the official website directly. If you notice any incorrect or missing information, don't hesitate to reach out to us by email.
