MO' Cowbell Marathon/Half-Marathon/10K/5K
- Date
- November 8–29, 2026
- Location
- Frontier Park, Saint Charles, MO
- Distance
- Marathon · Half Marathon · 10K & more
From the Organizer
Don't miss the fun and excitement of the 15th annual MO' Cowbell Race on November 8, 2026! Four events to choose from on Sunday morning, the Marathon, the Half-Marathon, 10K or the 5K. Flat & fast courses, perfect for beginners or those who want to set a new personal best!
Registration for the Marathon, Half-Marathon, 10K, or the 5K includes:
- Commemorative performance long-sleeve swag
- One-of-a-Kind finisher medal
- FREE and convenient parking
- Free downloadable photos for all participants
- Two-day Health and Fitness ExMO' Packet Pickup
- Family friendly post race party with lots of food, fun, and music
Registration for the Virtual Run includes:
- 2026 One-Of-A-Kind Finisher Medal
- Shipping and handling of your medal to you
- Option to add on race swag
Events
Weather
Typical Conditions
It's too far out for a forecast, so here's what weather on this date is normally like in the area. A race day forecast will replace this as race week approaches.
Typical High
58°
Typical Low
37°
Chance of Rain
29%
Based on US Climate Normals data from St Peters 2 Se, 3 mi from the venue.
Host City
About Saint Charles, MO
Population
71,048
as of 2023
Elevation
570 ft
Nearest Airport
STL
St. Louis Lambert International Airport · 9 mi
Time Zone
Central Time
From Endurance Grid
A mid-size host city. Enough lodging and amenities to keep race weekend easy, without big-city sprawl.
Race Location
Your Next Start Line
What Are You
Waiting For?
Every finish line starts with a single decision. Claim your spot at MO' Cowbell Marathon/Half-Marathon/10K/5K, put it on the calendar, and turn “someday” into a start date.
153
Days to train
- Race
- MO' Cowbell Marathon/Half-Marathon/10K/5K
- Date
- November 8–29, 2026
- Location
- Frontier Park, Saint Charles, MO
Coming Up
More Running races near Saint Charles, MO
Love to Run St. Charles 5k | 10k | Half Marathon
Half Marathon · 10K · 5K
Less than a mile away
Run By Faith 5k
5K
5 miles away
The "ROCKIN' RIVERFEST" 5k, 10K, HALF MARATHON & Fun Run!
Half Marathon · 10K · 5K
Less than a mile away
Pretty in Pink 5k !
5K
6 miles away
From Endurance Grid
About This Sport
Endurance Grid is here to help you understand the sport, decide if it's the right fit, and learn how to prepare. For course distances, logistics, and race-day specifics, always defer to the race organizer's event page.
The half marathon is the distance where you find out what you're actually made of. Long enough to demand real preparation. Short enough that it doesn't consume your life to train for it. Most people who run their first half describe it as the race that changed their relationship with what they're capable of. Once you cross this finish line, the bar moves. That's not a warning — that's the point.
Race day energy varies by event size, but the finish line feeling is the same regardless. Big races keep the noise going the whole way. Smaller races give you stretches where it's just you and the miles — and that solitude becomes its own kind of fuel.
The half marathon rewards people who show up for the boring training miles.
How long to train: 10–14 weeks. If you're already running consistently, 10 weeks of structured buildup is enough. If you're building from a casual base, give yourself 14.
Running
From 5K to marathon, running races are the most accessible entry point into endurance sport. There's a distance for every fitness level and a community at every start line.
Frequently Asked Questions (FAQs)
- What is the MO' Cowbell Marathon/Half-Marathon/10K/5K?
- MO' Cowbell Marathon/Half-Marathon/10K/5K is a running race held in Saint Charles, Missouri on November 8, 2026. It is one of the many endurance events listed on Endurance Grid, a multi-sport endurance event calendar covering running races, triathlons, HYROX, and more endurance sports across the United States. Find more running races near you or explore our sports guides to learn what race day actually feels like.
- When and where is the MO' Cowbell Marathon/Half-Marathon/10K/5K?
- Sunday, November 8, 2026 in Saint Charles, Missouri at Frontier Park, Saint Charles, MO. Check the event page for exact start times and wave schedules.
- How do I register for the MO' Cowbell Marathon/Half-Marathon/10K/5K?
- Registration is handled through the event's registration page. Confirm pricing and distances there, and sign up.
MO' Cowbell Marathon/Half-Marathon/10K/5K
Nov 8, 2026