MO Cowbell Marathon

St. Charles, MO, USA • November 08, 2026
TopDescriptionCourse
Register

Subscribe

Get updates on the MO Cowbell Marathon race forecast and be the first to know if the forecast shifts.

Text Updates

Maximum one update per day. Standard messaging rates apply. Currently only supports USA, UK, and Canada.

Phone Number

Email Updates

By submitting your email you agree to receive weather forecasts and racecast.io updates.

partly-cloudy-day Partly cloudy throughout the day.

Pace Calculator

Distance: 26.2mi
0:00:00
HH:MM:SS
Pace
—/mi
Weather Adj
—/mi
Common Goals:

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

Area Map

Course Map

FAQ

Ask a Question about the MO Cowbell Marathon

Racecast Concierge (free during beta)

Ask a question about the MO Cowbell Marathon and we'll do the hard part and find the answer for you within 48 hours.

By using Racecast Concierge, you agree to receive email alerts pertaining to the MO Cowbell Marathon and general racecast.io updates.

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 Qualfier?

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.

Historical Weather

Based on 12 years of data
Avg Temp
74°F
L:62°H:74°
RunScore
7
Conditions
Rain Freq
33%
4 of 12 yrs
Wind10mph
Dew53°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults

2025 MO Cowbell Marathon

Clear conditions throughout the day.

2025
clear-day
66°/85°-
7

2024 MO Cowbell Marathon

Clear conditions throughout the day.

2024
clear-day
71°/81°-
7

2023 MO Cowbell Marathon

Clear conditions throughout the day.

2023
clear-day
69°/85°-
7

2022 MO Cowbell Marathon

Clear conditions throughout the day.

2022
clear-day
54°/76°-
8

2021 MO Cowbell Marathon

Partly cloudy throughout the day with rain.

2021
partly-cloudy-day
72°/77°Light
7

2019 MO Cowbell Marathon

Partly cloudy throughout the day with rain.

2019
cloudy
63°/65°Light
8

2018 MO Cowbell Marathon

Partly cloudy throughout the day with a chance of rain throughout the day.

2018
cloudy
70°/86°Light
7

2017 MO Cowbell Marathon

Partly cloudy throughout the day.

2017
partly-cloudy-day
58°/76°-
8

2016 MO Cowbell Marathon

Cloudy skies throughout the day with afternoon rain.

2016
cloudy
62°/71°-
8

2015 MO Cowbell Marathon

Partly cloudy throughout the day.

2015
cloudy
51°/57°-
9

2014 MO Cowbell Marathon

Clearing in the afternoon.

2014
partly-cloudy-day
51°/73°-
8

2013 MO Cowbell Marathon

Partly cloudy throughout the day with rain.

2013
rain
52°/57°Light
7
You Need an Account For That

Setting up a racecast.io account will allow you to start building a reputation in the community. Over time you'll be able to rate races, join the discussion, and post in the community.

Right now we are invite only, you can get on the waitlist by entering your email below:

OR
You Need an Account For That

Setting up a racecast.io account will allow you to start building a reputation in the community. Over time you'll be able to rate races, join the discussion, and post in the community.

Right now we are invite only, you can get on the waitlist by entering your email below:

OR