Iowa Trail Run Series: Sugar Bottom Fall

In 2025, you get a second crack at Sugar Bottom! Come back for the fall edition featuring the same half marathon, 10K, and 5K distances. Register for both spring and fall events and save 10%. Beat your time from the Spring Race and get a bonus ITRS swag item!

$3 from every registration still goes to ICORR - the Iowa Coalition of Off-Road Riders who maintain the trails in and around the Iowa City area. 

The Iowa Trail Run Series is not about spending a bunch of cash for no reason. You'll get a great race with clear marking and course support, with basic timing, a cool custom bib, and a rotating race item such as a BUFF, socks, a stocking cap, coffee mug, and aluminum water bottle. Signing up for the entire series includes a series backpack!Do you want a really soft and comfy tri-blend shirt with one of our Animal Icons? Great! Add one during your registration. We know some people have enough stuff in their closet and others may want to commemorate the day!  Plenty of post-race food to refuel! Games! Giveaways from sponsors!