Runners start the Race 13.1 St. Louis Half Marathon just west of downtown in the Weldon Spring Heights area, next to the Weldon Spring Conservation Area. From there, the race follows a clockwise loop along the park roads and trails within the conservation area, before bringing runners back to the finish line at Missouri Research Park.
Note: The course map above provides the approximate route for the race. Though every effort has been made to ensure its accuracy, changes are sometimes made to race routes due to weather conditions, road closures or other circumstances that can require a course to be changed. If you see an error above, contact us here.