# I-35 Challenge

- **When:** Fri, Oct 16, 2026 · 7:00 PM CDT
- **Where:** Kansas City, MO & Des Moines, IA, Kansas City, MO, 64108
- **Event page:** https://runthis.run/event/rs-141376-i-35-challenge

## Registration

Register on the event's own site: https://runsignup.com/Race/MO/KansasCity/I35Challenge?aflt_token=58wBqomPr6bPwa1YDhuKo0IQvrNCjzTq

## Description

The I-35 Challenge is a partnership between the Garmin Kansas City Marathon and IMT Des Moines Marathon, offering the challenge of completing both races on concurrent weekends. 

Participants can do any of the following combinations of events to complete the I-35 Challenge:

Marathon in Kansas City and Marathon in Des Moines
Marathon in Kansas City and Half Marathon in Des Moines
Half Marathon in Kansas City and Marathon in Des Moines
Half Marathon in Kansas City and Half Marathon in Des Moines

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Source: [https://runthis.run/event/rs-141376-i-35-challenge](https://runthis.run/event/rs-141376-i-35-challenge) — data from Run This (runthis.run).