MO Cowbell Marathon

St. Charles, MO, USA · November 08, 2026

47°·61° high·Breezy·Dry

Weather

Race Day Weather

47°at start

61° high

Breezy

Dry

Cool temps, variable winds ahead

Runners will face a temperature rise from 47°F to 61°F, with a maximum wind of 10 mph, predominantly from the south. The wind will change direction throughout the race, presenting headwinds between Miles 11-19, which may challenge pacing. Runners should focus on maintaining a steady effort early, utilizing tailwinds from Miles 1-6 and 20-26 for speed, while planning hydration accordingly.

Race day forecast available in 197 days

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Pace Calculator

Distance: 26.2mi

Target Finish Time

0:00:00

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Race Info

Join thousands from across the Midwest and beyond for the fastest, flattest course you’ve likely ever competed. MO’ Cowbell was started in 2011 with the goal of hosting a family-friendly, fun race put on by local folks for local folks. This flat course that starts and ends along the Missouri River can be used as a qualifier for other esteemed marathons such as the Boston Marathon, New York City Marathon, London Marathon and Chicago Marathon. Source

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FAQ

When is the 2026 MO Cowbell Marathon?

The 2026 MO Cowbell Marathon will be held on Sunday November 8, 2026.

Is the MO Cowbell Marathon a Boston Marathon Qualifier?

Yes, the MO Cowbell Marathon is an official Boston Marathon qualifier.

What is the time limit for the MO Cowbell Marathon?

The time limit for the MO Cowbell Marathon is 6.5 hours.

What will the weather be like for the 2026 MO Cowbell Marathon?

The forecast calls for a high of 61°F and a low of 44°F with a 0% chance of rain. Check our detailed hourly forecast above for the best marathon race plan.

Historical Weather

Based on 12 years of data

Avg Temp

74°F

L:62° H:74°

RunScore

Conditions

Rain Freq

33%

4 of 12 yrs

Wind10mph

Dew53°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

Year	Low / High	Rain	Dew Point
2025 MO Cowbell Marathon Clear conditions throughout the day. 2025	66°/85°	-	56°
2024 MO Cowbell Marathon Clear conditions throughout the day. 2024	71°/81°	-	46°
2023 MO Cowbell Marathon Clear conditions throughout the day. 2023	69°/85°	-	60°
2022 MO Cowbell Marathon Clear conditions throughout the day. 2022	54°/76°	-	48°
2021 MO Cowbell Marathon Partly cloudy throughout the day with rain. 2021	72°/77°	Light	68°
2019 MO Cowbell Marathon Partly cloudy throughout the day with rain. 2019	63°/65°	Light	51°
2018 MO Cowbell Marathon Partly cloudy throughout the day with a chance of rain throughout the day. 2018	70°/86°	Light	70°
2017 MO Cowbell Marathon Partly cloudy throughout the day. 2017	58°/76°	-	47°
2016 MO Cowbell Marathon Cloudy skies throughout the day with afternoon rain. 2016	62°/71°	-	60°
2015 MO Cowbell Marathon Partly cloudy throughout the day. 2015	51°/57°	-	49°
2014 MO Cowbell Marathon Clearing in the afternoon. 2014	51°/73°	-	42°
2013 MO Cowbell Marathon Partly cloudy throughout the day with rain. 2013	52°/57°	Light	39°

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