Mo' Cowbell Marathon

Mo' Cowbell Marathon takes place in Saint Charles, Missouri, on November 8, 2026. Four distances start together at 7:30 a.m.: the marathon (26.2 miles), the half marathon (13.1 miles), a 10K and a 5K. The courses are flat, which the organizers pitch at first-timers and at anyone chasing a personal best. Entry includes a commemorative shirt, a distinctive medal, free parking, downloadable photos and access to a two-day health and fitness expo where you collect your bib. A family party with food, entertainment and music follows the race, and a virtual option ships a medal with an optional long-sleeve shirt.

If this is your first marathon, count backward: 16 weeks of training with a weekly long run building toward 20 miles is the standard framework, and a flat course lets you hold one steady pace instead of constantly resetting your effort.