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Best St. Louis, Missouri Half Marathon Races

View some of the best Half Marathon races in St. Louis, Missouri! 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.

    • 1/2M

    Maryland Heights, MO

    16.83 miles away

    I'm Attending

    Creve Coeur St. Paddy's Half Marathon & 7K Run/Walk

    Creve Coeur St. Paddy's Half Marathon & 7K Run/Walk - 3/06/2021Maryland Heights, MO Use #StPaddysRun when sharing your photos from the event. Event times, dates, location and all other details are subject to change prior to the event. All of...

    • 1/2M

    Saint Louis, MO

    8.2 miles away

    I'm Attending

    Students on the GO!

    Program Outline:   Students on the GO! is a program for high school students to train for a half marathon 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 ...

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