Mighty Mo Run
USATF CertifiedFriday, September 11, 2026
Sioux City, Iowa
The Experience
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
Course Information
USATF Certified Course
IA21001GM · Expires 2031
Certified Course Name
Mighty Mo Half Marathon
Net Drop
0.00
m/km
Separation
0.0%
start to finish
This course is relatively flat with minimal net elevation change. Loop course — start and finish are close together.
View USATF Course Map (PDF)Race Details
Race Day
Friday, September 11, 2026 · 9/13/2026 07:00
Start Location
Siouxland Expo Center, Sioux City, IA 51101
Course
Loop
Also Offers
Giveaway
T-Shirt
Registration
Register online — $70
Race Website
Official race information
Historical Weather
☀
Avg High
81°F
☽
Avg Low
61°F
☂
Precip
0.07 in
🍃
Wind
12.3 mph
More races in Iowa
The Experience
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
Course Information
USATF Certified Course
IA21001GM · Expires 2031
Certified Course Name
Mighty Mo Half Marathon
Net Drop
0.00
m/km
Separation
0.0%
start to finish
This course is relatively flat with minimal net elevation change. Loop course — start and finish are close together.
View USATF Course Map (PDF)Race Details
Race Day
Friday, September 11, 2026 · 9/13/2026 07:00
Start Location
Siouxland Expo Center, Sioux City, IA 51101
Course
Loop
Also Offers
Giveaway
T-Shirt
Registration
Register online — $70
Race Website
Official race information