Saturday, October 17, 2026 · 7:00 AM · Kansas City, Missouri
I-35 Challenge
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
- 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.
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I-35 Challenge
Sat, Oct 17, 2026 · $38.10-$331.75