2 events in Sioux City, Iowa

From big races to Saturday morning group runs—find trail running events and connect with the local endurance sports community.

• Mighty Mo Run [mightymorun.com] [Register at runsignup.com]
  • Subscribe to My Calendar (sign in required)

  • ---

  • Download single event

  Fri, Sep 11, 2026 at 6:30 PM

  Description

  ▼ Show more Show less

  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...

  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

  5k 10k 13.1 Miles 26.2 Miles Indoor Run Trail

  Sioux City, Iowa, 51101, United States
  OpenStreetMap Google Maps

Local Clubs & Organizations