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
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
Typical race-day weather
Based on 6 years of Open-Meteo archive data for this event's race dates in Sioux City, plus the 3 days either side.
The sun rises at 7:01 AM and sets at 7:42 PM local time (CDT) in Sioux City on September 11, 2026 — 12h 41m of daylight.
Course
No course map published yet.
The organizer hasn't released a route for this event, and we don't publish guesses. If you're the organizer, send us a GPX file and we'll draw the profile.
Reviews
Done this event?
If you've participated in this event, share your experience with other runners
Other races near Sioux City
Different organizers, within 40 miles, in the next three months
🏃 Plan Your Next Race in Sioux City
Find upcoming events by distance:
- Sioux City 5K Races 3 races
- 10K Run Events in Sioux City 3 races
- Sioux City Half Marathons 2 races
- Sioux City Running Calendar 2026 3 races
Where this page comes from. Race details were last updated on . We re-check listings regularly and again in the week before race day.
- Entries, prices, waves and inclusions — the event's official registration page
- Temperature and humidity — Copernicus ERA5 reanalysis via Open-Meteo (CC BY 4.0)
- Elevation and terrain relief — Copernicus DEM GLO-90, ESA (CC BY 4.0)
- Comparisons and counts — Race Discovery calendar, 7 Sioux City events
Spotted something wrong? Tell us and we'll fix it.