I-35 Challenge
Past Event
Sat, Oct 17, 2026
Kansas City, MO
Kansas City, MO & Des Moines, IA
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Typically 50–68°F · low rain risk
See last 10 years
On this date: rain 1 of the last 10 years
2025
65–84°F
rain
2024
43–66°F
dry
2023
41–68°F
dry
2022
37–48°F
dry
2021
43–70°F
dry
2020
52–70°F
dry
2019
42–66°F
dry
2018
42–63°F
dry
2017
51–69°F
dry
2016
73–85°F
dry
Best months to race in Missouri →
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About this race
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
Course map
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