In order to use RunSignup, your browser must accept cookies. Otherwise, you will not be able to register for races or use other functionality of the website. However, your browser doesn't appear to allow cookies by default.
If you still see this message after clicking the link, then your browser settings are likely set to not allow cookies. Please try enabling cookies. You can find instructions at https://www.whatismybrowser.com/guides/how-to-enable-cookies/auto.
Additional race information can be found at http://www.mightymorun.com.
Sioux City, Iowa's premier running event. Featuring a Kids Run, 5K, 10K, 1/2 Marathon and Full Marathon. All courses will be Flat, Fast & Fun! Starting and Finishing at the Siouxland Expo Center and continuing on the Missouri River Trail next to it. Proceeds will help support the efforts of the H.A.R.T. Foundation. Helping Athlete's Run & Train. The 1/2 and Full Marathon are updated courses for better turn arounds.
If you have any questions about this race, click the button below.
Like this page and invite your friends on Facebook.
Please complete the following survey to help us better understand your race experience.
Thank you! Your message was posted to Facebook.