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MO’ Cowbell Marathon
Race Details:
- Location: St Charles, MO, USA
- Race Date: 11/08/2026
- Race Distances: Full Marathon, Half Marathon
What This Race Counts Toward:
Boston: Yes
World Marathon Majors: Yes
MO’ Cowbell Marathon Description
The MO’ Cowbell Marathon is a mostly flat, Boston qualifying race through St. Charles, Missouri, along the Missouri River. The mostly loop course tours the city’s historic Main Street district and riverfront, offering a charming small-city backdrop with minimal elevation change. Known for enthusiastic cowbell-ringing spectators lining the route, this fall race combines a genuinely fast, USATF-certified course with a lively, community-driven atmosphere. A half marathon, 10K, and 5K run the same weekend, making it a full celebration of the St. Charles running community.
Always check the official race website for the most accurate and up-to-date race information and logistics.
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MO’ Cowbell Marathon Additional Details:
True to its name, every marathon finisher at MO’ Cowbell receives their own collectible cowbell, and those celebrating a personal record get to ring the oversized “BIG PR cowbell” at the finish line, a tradition that turns the last few steps into a genuine celebration. Aid stations show up roughly every two and a half miles with water and Gatorade Endurance, plus Gu at two key points, and live music keeps energy up along the way. At the finish, runners are handed halved bananas, chocolate chip Chewy Bars, chips, chocolate milk, and a towel, alongside a proper post-race party with food vendors and more cowbells than you’d expect at a single event. Whether you set a PR or not, the ringing never really stops.
Course Information
Profile: Mostly Flat
Type: Mostly Loop
Surface: Mostly Road/Pavement
Pace Groups: No
Time Limit: 6.5 hours (full)
# of Finishers
Half Marathon: 2,300+
Marathon: 503
Elevation Details
Elevation Gain: 520 ft (158 m)
Elevation Loss: Unknown
Average Temperature
- Low: 55°F
- High: 74°F
Train Smarter for Race Day
A great race starts long before the starting line. Whether you’re chasing your first finish or hunting a new PR, a structured training plan takes the guesswork out of race prep — building your fitness, your confidence, and your mileage at the right pace for you.
Explore plans for every distance and experience level, from your first 5K to your next ultra.
Beginner, intermediate, and advanced plans to get you to the start line ready.
Structured plans for every experience level, first finish to chasing a new PR.
Your bridge into marathons, with a plan built for stepping up the distance.
Things to Do in St Charles, MO, USA
Make the most of race weekend — here’s how to fill the time before and after you cross the finish line.
Arts & Culture
Foundry Art Centre
Browse contemporary art galleries at the Foundry Art Centre in St. Charles — a relaxed, indoor way to spend a taper day after race weekend.
Sports & Entertainment
Lewis & Clark Boathouse and Museum
See replica keelboats and pirogues at the Lewis & Clark Boathouse and Museum, tracing the expedition’s journey from St. Charles — a relaxed, indoor way to spend an afternoon after race day.
Museums & History
First Missouri State Capitol State Historic Site
Explore the restored First Missouri State Capitol State Historic Site, in use from 1821 to 1826 — an easy, indoor, low-impact stop after race day.
Landmark
Historic Main Street
Stroll the brick-paved streets of Historic Main Street, Missouri’s first and largest nationally registered historic district — an easy, flat, low-impact stop after race weekend.
Shopping
Main Street Shops
Browse more than 100 shops, restaurants, and cafés along St. Charles’s Historic Main Street — an easy, flat stroll for a post-race souvenir.
Outdoors & Trails
Katy Trail
Bike the Katy Trail along the Missouri River, a 240-mile trail running through St. Charles County — choose an easy segment for tired legs after race day.
Scenic Drives & Viewpoints
Frontier Park
Take in Missouri River views at Frontier Park, adjacent to Historic Main Street in St. Charles — a relaxed, flat way to spend a rest day.
Hotels & Lodging Near the MO’ Cowbell Marathon
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Boston Qualifier: Yes