Missouri
I-35 Challenge
I-35 Challenge is a running event held in Kansas City, Missouri. Its next confirmed date is Saturday, October 17, 2026.
- Race day
- October 17, 2026
- Location
- Kansas City, MO
Race details
- Date
- Saturday, October 17, 2026
- Location
- Kansas City, Missouri
- Registration
- runsignup.com
- Official website
- i35challenge.com
About the 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
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Guides from the RaceRove blog
- 8 min read How to Choose the Best Half Marathon for a PR, Racecation or 50-State Challenge The best half marathon depends on what you want from it. How to choose a course for a personal record, a race worth travelling for, or an efficient stop on a 50-state challenge.
- 7 min read How to Find a 5K, 10K, Half Marathon or Marathon Near You A practical way to find running races near you: pick a distance, decide how far you'll travel, read the listing properly and confirm the details before you register.
- 9 min read How to Run a Race in All 50 States How to plan a 50-state running challenge: set your own rules, group states into trips, build a calendar around the seasons, budget for it and keep track of every finish.
- Blog All guides Planning advice for finding, choosing and travelling to races.
I-35 Challenge: common questions
- When is the I-35 Challenge?
- The next confirmed date is Saturday, October 17, 2026.
- Where is the I-35 Challenge held?
- In Kansas City, Missouri.
- How do I register for the I-35 Challenge?
- Registration is handled by the organiser at runsignup.com. Entry fees, caps and deadlines are set there.
Plan this race in RaceRove
Save it to your plan, compare it with other races, check typical race-day weather and track your 50-state progress in the interactive app.