MO Cowbell 10K

St. Charles, MO, USA · November 8, 2026·
clear-day43°·47° high·Light·Dry
10
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Race Day Weather

clear-day
43°at start
61° high
Light
Dry
Your goal
0:00:00

Cool start — fast day potential, big temp swing

A cool 43°F at the start line is ideal for fast times — expect to warm up quickly once you're moving. Temps will climb significantly to 61°F by later miles, so expect fading conditions as the race progresses. Light winds shouldn't be a major factor for pacing. Moderate humidity at 71% is worth noting for effort level, especially in later miles.

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Pace Calculator

6.2mi
0:00:00
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Race Plan

Get your personalized MO Cowbell 10K race plan

A mile-by-mile breakdown of where your time goes, weather-adjusted splits, fueling timeline with aid stations, packing checklist, carb tracker, spectator guide, all built around your goal and race-day conditions.

Race Pace
Weather Splits
Nutrition
Gear & Packing
T-Minus
Carb Tracker
Spectator Guide
Race Band

Race Info

The 10K starts at Frontier Park, runs south on Riverside Drive to Boones Lick Road and returns along the River Walk. It then follows the Katy Trail north along the Missouri River to a turnaround on North River Road and comes back through historic downtown St. Charles on North Main Street. It finishes beside the park. The course is nearly flat, with one short rise late in the race.

Race weekend

Sunday, November 8
7:30 AMMarathon (26.2 mi)7:30 AMHalf Marathon (13.1 mi)
8:00 AM10K (6.2 mi)
8:00 AM5K (3.1 mi)
Area Map

Course Map

FAQ

When is the 2026 MO Cowbell 10K?

The 2026 MO Cowbell 10K will be held on Sunday November 8, 2026.

What will the weather be like for the 2026 MO Cowbell 10K?

The forecast calls for a high of 61°F and a low of 37°F with a 0% chance of rain. Check our detailed hourly forecast above for the best 10K race plan.

Historical Weather

Based on 12 years of data
Avg Temp
63°F
L:62° H:65°
RunScore
7
Conditions
Rain Freq
8%
1 of 12 yrs
Wind8mph
Dew53°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
2025
partly-cloudy-day
68°/73°-
5
2024
clear-day
72°/74°-
4
2023
clear-day
70°/75°-
4
2022
clear-day
56°/61°-
8
2021
partly-cloudy-day
73°/75°-
4
2019
partly-cloudy-day
62°/64°-
7
2018
cloudy
69°/71°-
3
2017
partly-cloudy-day
58°/60°-
8
2016
cloudy
62°/64°-
6
2015
cloudy
52°/53°-
10
2014
partly-cloudy-day
51°/55°-
10
2013
partly-cloudy-day
53°/53°Light
10