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Saturday, October 17, 2026 · 7:00 AM · Kansas City, Missouri

I-35 Challenge

Register for I-35 Challenge - Kansas City Marathon & Des Moines Marathon (opens in a new tab)Register for I-35 Challenge - Kansas City Marathon & Des Moines Half Marathon (opens in a new tab)Register for I-35 Challenge - Kansas City Half Marathon & Des Moines Marathon (opens in a new tab)Register for I-35 Challenge - Kansas City Half Marathon & Des Moines Half Marathon (opens in a new tab)Register for I-35 Challenge ONLY (already signed up for KC and Des Moines) (opens in a new tab)
Race Info

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

Can I do this race?
Time limit
No time limit listed by the organizer
Walkers
Not mentioned — ask the organizer
Terrain
Not stated
Certified
Not stated

Pulled from the organizer's own race description — per the organizer, not independently verified.

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Source

Race details on this page come from RunSignup and the official race website.

Race details can change and mistakes can be made. Always verify the race website for the most complete and accurate information. Report an error on this page.

Are you the race organizer, or did you spot something wrong?

I-35 Challenge

Oct 17, 2026 · $38.10-$305.50

Register (opens in a new tab)