Race Discovery
I-35 Challenge
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I-35 Challenge

Kansas City, Missouri, United States View on map
Oct 17, 2026 – Oct 18, 2026 (America/Chicago local time)
Running

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

Pick your distance

Running

I-35 Challenge - Kansas City Marathon & Des Moines Marathon

Garmin Kansas City Marathon - Marathon Registration IMT Des Moines Marathon - Marathon Registration

Oct 17, 2026 I-35 Challenge - Kansas City Marathon & Des Moines Marathon 7:00 AM
$325.00
Open

I-35 Challenge - Kansas City Marathon & Des Moines Half Marathon

Garmin Kansas City Marathon - Marathon Registration IMT Des Moines Marathon - Half Marathon Registration

Oct 17, 2026 I-35 Challenge - Kansas City Marathon & Des Moines Half Marathon 7:00 AM
$290.00
Open

I-35 Challenge - Kansas City Half Marathon & Des Moines Marathon

Garmin Kansas City Marathon - Half Marathon Registration IMT Des Moines Marathon - Marathon Registration

Oct 17, 2026 I-35 Challenge - Kansas City Half Marathon & Des Moines Marathon 7:00 AM
$305.00
Open

I-35 Challenge - Kansas City Half Marathon & Des Moines Half Marathon

Garmin Kansas City Marathon - Half Marathon Registration IMT Des Moines Marathon - Half Marathon Registration

Oct 17, 2026 I-35 Challenge - Kansas City Half Marathon & Des Moines Half Marathon 7:00 AM
$270.00
Open

I-35 Challenge ONLY (already signed up for KC and Des Moines)

Oct 17, 2026 I-35 Challenge ONLY (already signed up for KC and Des Moines) 7:00 AM
$35.00
Open

Typical race-day weather

Based on 19 years of Open-Meteo archive data for this event's race dates in Kansas City, plus the 3 days either side.

Temp (°C)
Minimum temperature (race-week average) 9.7° / Maximum temperature (race-week average) 19.4°
Feels Like (°C)
Minimum feels like — heat index / wind chill (race-week average) 8.0° / Maximum feels like — heat index / wind chill (race-week average) 19.4°
Peak wind (km/h)
Strongest wind of the day (race-week average)
19.8
Precip (mm)
Precipitation over the day (race-week average)
1.6mm
Humidity
Mean relative humidity (race-week average)
61.2%
Sunrise
Sunrise at the start line on October 17, 2026 (CDT)
Sunset
Sunset at the start line on October 17, 2026 (CDT)
Daylight
Hours between sunrise and sunset on race day
11h 06m

The sun rises at 7:30 AM and sets at 6:36 PM local time (CDT) in Kansas City on October 17, 2026 — 11h 06m of daylight.

Course

No course map published yet.

The organizer hasn't released a route for this event, and we don't publish guesses. If you're the organizer, send us a GPX file and we'll draw the profile.

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Other races near Kansas City

Different organizers, within 40 miles, in the next three months

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Where this page comes from. Race details were last updated on . We re-check listings regularly and again in the week before race day.

  • Entries, prices, waves and inclusions — the event's official registration page
  • Temperature and humidity — Copernicus ERA5 reanalysis via Open-Meteo (CC BY 4.0)
  • Elevation and terrain relief — Copernicus DEM GLO-90, ESA (CC BY 4.0)
  • Comparisons and counts — Race Discovery calendar, 110 Kansas City events

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