Garmin Olathe Marathon

Olathe, KS, USA · April 25, 2026
partly-cloudy-day42°·53° high·Breezy·Rain unlikely
7
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Race Day Weather

partly-cloudy-day
42°at start
51° high
Breezy
Slight chance

Cool start, adjust for wind

Runners will face a temperature range from 42°F at the start to 50°F at the finish, with 79% humidity and a dew point of 39°F. A steady 15 mph wind from the SE will create a crosswind effect in the opening mile, with tailwinds between miles 2-3 and 5, which may help pace. However, headwinds will challenge runners from miles 13-20, suggesting a conservative start and strategic pacing.

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Pace Calculator

Distance: 26.2mi
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Race Plan

Get your personalized Garmin Olathe Marathon race plan

Weather-adjusted pacing, per-mile terrain splits, fueling timeline with aid stations, packing checklist, carb tracker, spectator guide — all personalized to your goal and race-day conditions.

Race Conditions
Terrain Splits
Nutrition
Gear & Packing
T-Minus
Carb Tracker
Spectator Guide
Race Band

Race Info

Join us for a marathon, half marathon, 10k, Munchkin Marathon or Senior Walk through the beautiful streets and trails of Olathe. This year marks the 22nd anniversary of the event (click here to learn more about the history!) The city of Olathe is 20 minutes southwest of downtown Kansas City, located in Johnson County, Kansas. Come experience our Midwest charm in the Land of Oz. Source

FAQ

When is the 2026 Garmin Olathe Marathon?

The 2026 Garmin Olathe Marathon will be held on Saturday April 25, 2026.

Is the Garmin Olathe Marathon a Boston Marathon Qualifier?

Yes, the Garmin Olathe Marathon is an official Boston Marathon qualifier.

What is the time limit for the Garmin Olathe Marathon?

The time limit for the Garmin Olathe Marathon is 6.5 hours.

What will the weather be like for the 2026 Garmin Olathe Marathon?

The forecast calls for a high of 53°F and a low of 42°F with a 26% chance of rain. Check our detailed hourly forecast above for the best marathon race plan.

Historical Weather

Based on 20 years of data
Avg Temp
61°F
L:48° H:61°
RunScore
7
Conditions
Rain Freq
25%
5 of 20 yrs
Wind14mph
Dew44°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
2025
cloudy
54°/56°-
8
2024
partly-cloudy-day
42°/52°-
8
2023
clear-day
34°/45°-
6
2019
clear-day
34°/54°-
8
2018
cloudy
47°/54°Light
9
2017
cloudy
47°/61°-
7
2016
clear-day
56°/69°-
7
2015
clear-day
61°/62°Light
7
2014
partly-cloudy-day
54°/72°Light
7
2013
clear-day
32°/50°-
8
2012
clear-day
36°/61°-
8
2011
cloudy
37°/52°-
4
2010
clear-day
46°/71°-
7
2009
clear-day
44°/60°-
6
2008
cloudy
39°/48°-
6
2007
partly-cloudy-night
58°/63°Light
7
2006
clear-day
61°/70°-
8
2005
clear-day
56°/77°-
7
2004
clear-day
70°/79°-
6
2003
clear-day
59°/70°Light
7