Mighty Mo Run
- Date
- September 11–13, 2026
- Distance
- Sioux City Mighty Mo 10K · Sioux City Mighty Mo Half Marathon · Sioux City Mighty Mo 5K & more
From the Organizer
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
Events
Weather
Typical Conditions
It's too far out for a forecast, so here's what weather on this date is normally like in the area. A race day forecast will replace this as race week approaches.
Typical High
79°
Typical Low
53°
Based on US Climate Normals data from Sioux City Ang, 6 mi from the venue.
Host City
About Sioux City, IA
Population
85,651
as of 2023
Elevation
1,099 ft
Nearest Airport
SUX
Sioux Gateway Airport / Brigadier General Bud Day Field · 6 mi
Major Hub
OMA
Eppley Airfield · 85 mi
Time Zone
Central Time
From Endurance Grid
A mid-size host city. Enough lodging and amenities to keep race weekend easy, without big-city sprawl.
Race Location
Your Next Start Line
What Are You
Waiting For?
Every finish line starts with a single decision. Claim your spot at Mighty Mo Run, put it on the calendar, and turn “someday” into a start date.
95
Days to train
- Race
- Mighty Mo Run
- Date
- September 11–13, 2026
Coming Up
More Running races near Sioux City, IA
Peak Performance Fitness Gear Summer Run Camp
Less than a mile away
Chutes & Ladders Trail Run
Less than a mile away
Paullina Gemboree 5K Walk/Run
5K
48 miles away
Red White & Blue 2.62
2 miles away
From Endurance Grid
About This Sport
Endurance Grid is here to help you understand the sport, decide if it's the right fit, and learn how to prepare. For course distances, logistics, and race-day specifics, always defer to the race organizer's event page.
With running, there's a distance for every fitness level, a community at every start line, and nothing beats the feeling of crossing a finish line you trained for.
Running is an endurance sport that rewards consistency, and showing up every week compounds in ways that will surprise you.
Running
From 5K to marathon, running races are the most accessible entry point into endurance sport. There's a distance for every fitness level and a community at every start line.
Frequently Asked Questions (FAQs)
- What is the Mighty Mo Run?
- Mighty Mo Run is a running race held in Sioux City, Iowa on September 11, 2026. It is one of the many endurance events listed on Endurance Grid, a multi-sport endurance event calendar covering running races, triathlons, HYROX, and more endurance sports across the United States. Find more running races near you or explore our sports guides to learn what race day actually feels like.
- When and where is the Mighty Mo Run?
- Friday, September 11, 2026 in Sioux City, Iowa at Siouxland Expo Center, Sioux City, IA. Check the event page for exact start times and wave schedules.
- How do I register for the Mighty Mo Run?
- Registration is handled through the event's registration page. Confirm pricing and distances there, and sign up.
Mighty Mo Run
Sep 11, 2026