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MO Cowbell Marathon

St. Charles, MO, USA

Clear conditions throughout the day.

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Details
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Pre-Race
Race
Post-Race
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Race Overview

MO' Cowbell Marathon has run through St. Charles, Missouri since 2011, started by local organizers to host a family-friendly race for the community. The USATF-certified course starts and finishes along the Missouri River in Frontier Park, staying flat for about ten miles before a two-mile hilly stretch on the Little Hills Expressway and a downhill final mile to the finish. It qualifies for the Boston, New York City, London and Chicago marathons.
Wikipedia

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 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.

MO Cowbell Marathon Course Map

Loading Course Map...

MO Cowbell Marathon Weather History

MO Cowbell Marathon Weather Averages

Average Temp: 66°, Average Low: 57°, Average High: 75°
Time8AM9AM10AM11AM12PM1PM2PM
Temp
59°
62°
65°
68°
70°
72°
73°
Feel59°62°65°68°71°73°73°
Rain-------
Wind5mph
7mph
8mph
9mph
8mph
10mph
10mph
Dew53°53°53°52°52°52°52°
RunScoreRun Score: 9Run Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 7Run Score: 7

MO Cowbell Marathon 2025

Oct 5, 2025
Clear conditions throughout the day.
Low: 61°, High: 85°
Time9AM10AM11AM12PM1PM2PM3PM
Temp
partly-cloudy-day 68°
clear-day 73°
clear-day 78°
clear-day 80°
partly-cloudy-day 82°
clear-day 84°
clear-day 85°
Feel68°73°78°80°82°84°84°
Rain-------
Wind7mph
11mph
12mph
11mph
12mph
11mph
11mph
Dew55°55°55°55°56°57°56°
RunScoreRun Score: 9Run Score: 8Run Score: 7Run Score: 7Run Score: 6Run Score: 6Run Score: 7

MO Cowbell Marathon 2024

Oct 6, 2024
Clear conditions throughout the day.
Low: 61°, High: 82°
Time9AM10AM11AM12PM1PM2PM3PM
Temp
clear-day 72°
clear-day 74°
clear-day 77°
clear-day 79°
clear-day 80°
clear-day 81°
clear-day 82°
Feel72°74°77°79°80°79°80°
Rain-------
Wind9mph
10mph
12mph
12mph
12mph
11mph
13mph
Dew60°53°45°42°38°39°40°
RunScoreRun Score: 8Run Score: 8Run Score: 7Run Score: 7Run Score: 7Run Score: 7Run Score: 7

MO Cowbell Marathon 2023

Oct 1, 2023
Clear conditions throughout the day.
Low: 62°, High: 86°
Time9AM10AM11AM12PM1PM2PM3PM
Temp
clear-day 70°
clear-day 75°
clear-day 80°
clear-day 82°
clear-day 84°
clear-day 85°
clear-day 85°
Feel70°75°80°82°84°84°84°
Rain-------
Wind6mph
4mph
7mph
9mph
9mph
10mph
10mph
Dew61°61°61°59°58°57°57°
RunScoreRun Score: 8Run Score: 8Run Score: 8Run Score: 7Run Score: 7Run Score: 7Run Score: 7

MO Cowbell Marathon 2022

Oct 2, 2022
Clear conditions throughout the day.
Low: 49°, High: 78°
Time9AM10AM11AM12PM1PM2PM3PM
Temp
clear-day 56°
clear-day 61°
clear-day 66°
clear-day 70°
clear-day 74°
clear-day 75°
clear-day 77°
Feel56°61°66°70°74°75°77°
Rain-------
Wind4mph
1mph
1mph
2mph
11mph
9mph
8mph
Dew47°48°49°49°47°47°45°
RunScoreRun Score: 9Run Score: 8Run Score: 8Run Score: 8Run Score: 7Run Score: 8Run Score: 8

MO Cowbell Marathon 2021

Oct 2, 2021
Partly cloudy throughout the day with rain.
Low: 71°, High: 80°, Moderate Rain
Time9AM10AM11AM12PM1PM2PM3PM
Temp
partly-cloudy-day 73°
partly-cloudy-day 75°
cloudy 74°
rain 72°
rain 75°
cloudy 75°
cloudy 77°
Feel73°75°74°72°75°75°77°
Rain--lightlightlight--
Wind7mph
12mph
8mph
5mph
5mph
6mph
6mph
Dew67°67°68°68°70°69°68°
RunScoreRun Score: 8Run Score: 7Run Score: 8Run Score: 5Run Score: 6Run Score: 8Run Score: 8

MO Cowbell Marathon 2019

Oct 6, 2019
Partly cloudy throughout the day.
Low: 60°, High: 68°, Light Rain
Time9AM10AM11AM12PM1PM2PM3PM
Temp
partly-cloudy-day 62°
partly-cloudy-day 64°
partly-cloudy-day 64°
partly-cloudy-day 65°
partly-cloudy-day 66°
partly-cloudy-day 64°
partly-cloudy-day 65°
Feel62°64°64°65°66°64°65°
Rain-----light-
Wind8mph
9mph
6mph
7mph
11mph
5mph
7mph
Dew50°47°47°47°47°49°49°
RunScoreRun Score: 9Run Score: 9Run Score: 9Run Score: 9Run Score: 8Run Score: 9Run Score: 9

MO Cowbell Marathon 2018

Oct 7, 2018
Partly cloudy throughout the day with rain.
Low: 66°, High: 86°, Heavy Rain
Time9AM10AM11AM12PM1PM2PM3PM
Temp
cloudy 69°
cloudy 71°
partly-cloudy-day 77°
partly-cloudy-day 82°
partly-cloudy-day 84°
partly-cloudy-day 86°
rain 86°
Feel69°71°77°86°89°92°91°
Rain------light
Wind8mph
7mph
8mph
8mph
10mph
14mph
15mph
Dew69°70°71°71°71°71°72°
RunScoreRun Score: 8Run Score: 8Run Score: 8Run Score: 6Run Score: 5Run Score: 4Run Score: 4

MO Cowbell Marathon 2017

Oct 1, 2017
Partly cloudy throughout the day.
Low: 53°, High: 79°
Time9AM10AM11AM12PM1PM2PM3PM
Temp
partly-cloudy-day 58°
partly-cloudy-day 60°
partly-cloudy-day 65°
partly-cloudy-day 70°
partly-cloudy-day 73°
partly-cloudy-day 75°
partly-cloudy-day 77°
Feel58°60°65°70°73°75°77°
Rain-------
Wind9mph
10mph
6mph
8mph
6mph
11mph
9mph
Dew46°46°46°46°45°47°48°
RunScoreRun Score: 9Run Score: 8Run Score: 9Run Score: 8Run Score: 8Run Score: 7Run Score: 8

MO Cowbell Marathon 2016

Oct 2, 2016
Cloudy skies throughout the day.
Low: 59°, High: 71°, Light Rain
Time9AM10AM11AM12PM1PM2PM3PM
Temp
cloudy 62°
cloudy 64°
cloudy 67°
cloudy 70°
cloudy 71°
cloudy 70°
cloudy 71°
Feel62°64°67°70°71°70°71°
Rain-------
Wind5mph
6mph
7mph
7mph
7mph
6mph
5mph
Dew59°60°60°60°59°59°59°
RunScoreRun Score: 9Run Score: 9Run Score: 9Run Score: 8Run Score: 8Run Score: 8Run Score: 8

MO Cowbell Marathon 2015

Oct 4, 2015
Partly cloudy throughout the day.
Low: 51°, High: 59°
Time9AM10AM11AM12PM1PM2PM3PM
Temp
cloudy 52°
cloudy 53°
cloudy 54°
cloudy 56°
cloudy 57°
cloudy 57°
cloudy 58°
Feel52°53°54°56°57°57°58°
Rain-------
Wind10mph
10mph
9mph
8mph
9mph
9mph
12mph
Dew47°47°48°49°50°50°50°
RunScoreRun Score: 8Run Score: 8Run Score: 9Run Score: 9Run Score: 9Run Score: 9Run Score: 8

MO Cowbell Marathon 2014

Oct 5, 2014
Partly cloudy throughout the day.
Low: 42°, High: 74°
Time9AM10AM11AM12PM1PM2PM3PM
Temp
partly-cloudy-day 51°
partly-cloudy-day 55°
partly-cloudy-day 61°
partly-cloudy-day 64°
clear-day 67°
partly-cloudy-day 70°
partly-cloudy-day 73°
Feel51°55°61°64°67°70°73°
Rain-------
Wind1mph
3mph
8mph
7mph
10mph
13mph
14mph
Dew38°40°41°43°43°45°45°
RunScoreRun Score: 8Run Score: 9Run Score: 9Run Score: 9Run Score: 8Run Score: 7Run Score: 7

MO Cowbell Marathon 2013

Oct 6, 2013
Partly cloudy throughout the day.
Low: 50°, High: 57°, Light Rain
Time9AM10AM11AM12PM1PM2PM3PM
Temp
partly-cloudy-day 53°
partly-cloudy-day 53°
partly-cloudy-day 54°
cloudy 54°
partly-cloudy-day 56°
cloudy 56°
partly-cloudy-day 57°
Feel53°53°54°54°56°56°57°
Rainlight------
Wind13mph
16mph
19mph
15mph
17mph
16mph
21mph
Dew44°40°39°38°38°39°38°
RunScoreRun Score: 7Run Score: 7Run Score: 6Run Score: 7Run Score: 7Run Score: 7Run Score: 6