Largely fast and flat for the first 10 miles, the all-new Mo’ Cowbell Half Marathon takes runners on a tour of this city across the Missouri River from its larger neighbor, St. Louis. Runners start at Frontier Park along the banks of the river, and follow an out-and-back loop course that has its only hills to speak of in the final three miles of the race — and where spectators will be ringing the more than a thousand cowbells the race organizers plan to hand out on the day of the race.
(MORE: Mo’ Cowbell Half Marathon event details)