Mo' Cowbell Marathon

NOV
8
2026
MO' Cowbell Marathon in St. Charles, Missouri offers Marathon, Half Marathon, 10K and 5K on a mostly flat course along the Missouri River. The community nonprofit event can serve as a qualifier for Boston, New York City, London and Chicago marathons.
Sun 8 Nov 2026
26 miles 13 miles 10 kilometers 5 kilometers

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MO' Cowbell Marathon - St. Charles, Missouri

MO' Cowbell Marathon is a community road race held in historic St. Charles, Missouri on November 8, 2026. Distances offered include:

  • Marathon
  • Half-Marathon
  • 10K
  • 5K

The start and finish are along the Missouri River near Historic Main Street and Frontier Park. The course passes through New Town just past halfway, runs flat for nearly ten miles, includes a two mile hilly section along the Little Hills Expressway, and finishes with the last mile downhill toward the park. The event has been used as a qualifier for the Boston, New York City, London and Chicago marathons.

MO' Cowbell is produced by the Economic Development Council of St. Charles County as a nonprofit community event. The race team is led by one race director and a group of volunteers. Every dollar raised by MO' Cowbell remains in St. Charles County. The event notes its family friendly focus and includes community activities and local businesses near Historic Main Street, Streets of St. Charles and nearby attractions such as wineries in Augusta and the city of St. Louis to the east. Visit the organization's website for the most recent information.

26 mi
Marathon
13 mi
Half Marathon
10 km
10k
5 km