MO' Cowbell Marathon | Sunday, October 4, 2020, in St. Charles, MO – Marathon | Half-Marathon | Half-Marathon Relay | 5K
The Chuck Challenge
MO' Cowbell is proudly
sponsored by
Single Chuck
Double Chuck
Triple Chuck
Full chuck


We are a community non-profit organization called EDC Business & Community Partners, with the goal to promote a healthy lifestyle in St. Charles County, by creating a fun event for the whole family.

The MO’ Cowbell race team consists of only two people, but we try our very best to make sure everyone has a happy, healthy experience!


Every year it is our goal to put on a first-class event perfect for kids, walkers, Boston qualifiers and everyone in between. But we STRONGLY believe a little twist of humor doesn’t hurt. If our mascot Chuck the Cow, with abs and tennis shoes isn’t an indication, check out an inspiration of where our race name came from, the SNL skit More Cowbell.


We are a community race, put on by the community, for the community!

EDC Business & Community Partners is an economic development nonprofit that includes groups of leaders dedicated to investing in St. Charles County through education and health initiatives. Every dollar raised by MO’ Cowbell stays right here in St. Charles County. 

MO' Cowbell Start/Finish Line
500 S Riverside Dr. St Charles, MO 63301

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The 2020 MO’ Cowbell is going virtual.

Some of you may have seen this coming. Some of you (like us) may have been holding out hope that this event could still happen in real-time. But all of us have been dealing with 2020. And MO’Cowbell was no exception.

But here’s the good news: We have taken some inspiration from all of you. All of you who overcome the odds, who battle through adversity. All of you who take on a challenge.

So, in 2020, we are offering something that goes beyond just a timed race.

We are thrilled to offer The Chuck Challenge!

What is The Chuck Challenge? Simple. It's any combination of the 4 distances that we have previously offered. Single Chuck is any one event, Double Chuck is any two, and well, you get the point from there. Run (or walk!) a 5K, 10K, Half and Full to really challenge yourself and receive the whole chain of medals that link together.

What do I get for taking this challenge? Some pretty unique and awesome swag. Participants will receive a custom hat, medal (or medals depending on how many levels of the challenge you sign up for), a virtual race bib, mini cowbell (because it’s MO’ Cowbell Marathon), MO’ Cowbell face mask and an individual finisher line banner. Everyone is a winner this year!

All participants who were registered for the 2020 MO’ Cowbell Marathon will be contacted directly by email regarding their cancellation resolution options.

We are excited to see where The Chuck Challenge takes you!

Learn more here:
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Just a little cow(bell) humor 🤣
#mocowbell #chuckapproved
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Thank you, Sponsors!