View some of the best Half Marathon races in Saint Louis, Mo! RaceMob's race calendar allows you to find races that suits your needs. Use our advanced filters below or calendar on the right, and discover new races. We try to maintain up to date information, and rely heavily on our community of volunteers. If you find a race that we're missing, use the "Suggest Race" button on the right. Find RaceMob discounts that others have added or add deals that you've discovered.
Join us for the annual Time to Paddy 5k/10k and Lucky 13.1 Half Marathon! A St. Patrick-themed run that is perfect for the whole family. The fun includes great swag (designer shirt, custom medal), chip-timing, live results and awards, free photos,...
Experience a Marathon Reimagined! Discover the excitement of the Greater St. Louis Marathon scheduled for April 26, 2025. This not-to-be-missed event promises a weekend filled with exciting courses, iconic landmarks, and vibrant celebrations, incl...
Students on the GO! is a program for high school students to train for a half marathon or 10K over a 20-week program. This isn’t a program just for highly trained runners (though they are welcome!). This is a program for any student who want...
Join us for this magnificent 3rd Annual Drink MO Wine Run in Augusta, Missouri! The run begins in the quaint and hilly town of Augusta. After touring around the quiet, hilly, historical streets, you head down to the Katy Trail for some flat, fun m...
A unique 5k/10k/Half Marathon/Marathon in the heart of downtown St. Charles with a little bonus, non-technical, shady trail off of the Katy....truly a hidden gem! Come on out and see for yourself! Enjoy these flat and fast routes starting on the K...
Welcome to the the Rockin' Riverfest 5k,10k Half Marathon and Fun Run! The Rockin' Riverfest is a fun, flat, fast, family friendly event taking place on Saturday Morning July 5th. Starting at 8:00 am. Race/Run/Jog or Walk starting on the Kat...
Don't miss the fun and excitement of the MO' Cowbell Race on October 5, 2025! Four events to choose from on Sunday morning, the Marathon, the Half-Marathon, 10K or the 5K. Flat & fast courses, perfect for beginners or those who wan...
The Great GO! St. Louis Halloween Race features a half marathon, 10K, 5K, 1-mile fun run and 1-mile costume dog walk – with a special Halloween twist! From the serious road racer to the family dressed head-to-toe in costume completing the race tog...
The Innsbrook Half & 10k returns for 2025. Run on one of the most scenic, beautiful and challenging courses in the Midwest during the peak of fall color in Missouri! Hosted by Big River Race Management at the beautiful Innsbrook Resort. Locate...
The Skippo began in 2009 as a 20k trail race in beautiful Castlewood State Park that featured two 10k loops on a fairly flat course except, of course, for the famous stairs! In 2011, we wanted to involve as many runners as possible so we added two...
Join us for the annual Candy Cane Course 5k/12k! A fun, Christmas-themed event that is perfect for the whole family.The fun includes - Great Swag - designer shirt & custom medal Chip-timing with live results and awards Free photos De...
Welcome to The Frozen Stick Trail Run! The Frozen Stick is a stand alone event and also the FINALIE to the Stick Season Trail Run Series! Register for the series and you are registered for this as well, or just run this one! Using the same route o...
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