I-35 Challenge
Sat, Oct 17, 2026, 7:00 AM CDT
- Location
- Kansas City, MO
- Kansas City, MO & Des Moines, IA, 64108
- Type
- RUN
Sign up and verify details on the organizer’s official page.
At a glance
Double-check key detailsConquer the I-35 Challenge by completing two marathons or half marathons across Kansas City and Des Moines on back-to-back weekends.
- Competitive
CompetitiveGreat for: runners who like a competitive edge
The I-35 Challenge invites runners to test their endurance by completing two distinct races on concurrent weekends. This unique partnership between the Garmin Kansas City Marathon and IMT Des Moines Marathon allows participants to combine various distances. Choose from a full marathon or half marathon in Kansas City, paired with either a marathon or half marathon in Des Moines. It's an opportunity to experience two major Midwestern events and earn a special recognition for your combined effort.
What to expect
- Engage in a multi-race challenge across two major Midwestern cities.
- Combine a marathon or half marathon in Kansas City with a similar distance in Des Moines.
- Experience the unique satisfaction of completing two events on concurrent weekends.
Standout details
- Partnership between two major marathons
- Complete two races on concurrent weekends
- Choose from multiple distance combinations
Auto-drafted from the public listing — confirm details on the official event page before signing up.
Distances & registration
5 optionsRegistration for all distances is through the official signup link above.
I-35 Challenge - Kansas City Marathon & Des Moines…
Sat, Oct 17, 7:00 AM CDT · From $165.30
Opens Dec 31, 2025, 7:00 PM CST · Closes Feb 24, 2026, 6:59 PM CST
I-35 Challenge - Kansas City Marathon & Des Moines…
Sat, Oct 17, 7:00 AM CDT · From $223.60
Opens Dec 31, 2025, 7:00 PM CST · Closes Feb 24, 2026, 6:59 PM CST
I-35 Challenge - Kansas City Half Marathon & Des M…
Sat, Oct 17, 7:00 AM CDT · From $239.50
Opens Dec 31, 2025, 7:00 PM CST · Closes Feb 24, 2026, 6:59 PM CST
+ 2 more optionsHide
I-35 Challenge - Kansas City Half Marathon & Des M…
Sat, Oct 17, 7:00 AM CDT · From $202.40
Opens Dec 31, 2025, 7:00 PM CST · Closes Feb 24, 2026, 6:59 PM CST
I-35 Challenge ONLY (already signed up for KC and …
Sat, Oct 17, 7:00 AM CDT · From $38.10
Opens Dec 31, 2025, 7:00 PM CST · Closes Oct 16, 2026, 4:00 PM CDT
The course
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From the organizer
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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