Mighty Mo Run

SEP

11-13

2026

A three-day running event in Sioux City offering races from a 1K kids run to a full marathon along the Missouri River Trail. Proceeds benefit the H.A.R.T. Program and a Stooge challenge rewards multi-day participation.

11-13 Sep 2026

Sioux City, Iowa

Website

Marathon Half Marathon 10 kilometers 5 kilometers

Always double-check with the organizer's website! This page may contain affiliate links.

Mighty Mo Run - Sioux City, Iowa

The Mighty Mo Run is a three-day running event held September 11-13, 2026 in Sioux City. It includes a range of distances and a multi-day challenge called The Stooge. Races start and finish at the expo center in Sioux City and follow sections of the Missouri River Trail.

All courses are described as flat and fast. The event program includes a newly redesigned full marathon with river views and an indoor start and finish experience. The half marathon returns to an out-and-back layout and both the half and full marathon are certified courses.

Proceeds support the H.A.R.T. Program (Helping Athletes Run & Train). The Stooge challenge recognizes participants who run across multiple days with a unique award and a special event t-shirt. The weekend schedule spans three days and offers formal registration options and listed entry fees for each event.

Distances included: Visit the organization's website for the most recent information.