I-35 Challenge
Kansas City, MO
Sat, Oct 17, 2026
In 41 days · Sat, Oct 17, 2026
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Saturday, October 17th, 2026
Kansas City, MO & Des Moines, IA, Kansas City MO
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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 →
About this race
I-35 Challenge Overview
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.
Participation Options
Participants can do any of the following combinations of events to complete the I-35 Challenge:
- Marathon option: Marathon in Kansas City and Marathon in Des Moines
- Half marathon option: Marathon in Kansas City and Half Marathon in Des Moines
- Half marathon option: Half Marathon in Kansas City and Marathon in Des Moines
- Two half marathons: Half Marathon in Kansas City and Half Marathon in Des Moines
Event Details
The I-35 Challenge will take place on October 17, 2026, in Kansas City, MO and Des Moines, IA.
More Information
For more details, please visit the official race page: I-35 Challenge Race Page.
Course map
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