Running races in or near Arnold, MO
Marathons, 1-milers, 5Ks, half-marathons, 10Ks & more
See below for a frequently-updated, comprehensive list of upcoming running events in the local Arnold, MO area. Races listed here include both walking and running events of various distances — from 1-milers, to 5Ks, to marathons, and everything else in between.
*CANCELLED* Missouri 2025
Organization: Tough Mudder US
Date of Race: 08-16-2025
Description: Tough Mudder is more than just an obstacle course. Built on ...
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Pizza, Pop, & Puzzles
Organization: Fairview Heights Parks and Recreation
Date of Race: 02-07-2025
Description: DescriptionHave a fun filled evening with puzzles and pop! Form a ...
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6 Year Celebration 5k
Organization: Fairview Heights Parks and Recreation
Date of Race: 05-03-2025
Description: Description6 Year Celebration 5kCelebrate 6 years of REC Strong with a ...
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Puzzle Palooza - National Puzzle Day!
Organization: City of Belleville
Date of Race: 01-29-2025
Description: DescriptionGrab your friends & family and join us for our next ...
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Complete list of running events in and near Arnold, MO: Marathons, 1-milers, 5Ks, half-marathons, 10Ks, obstacle courses, walking events & more.
More information about Arnold
About Arnold
Arnold (MO) is a city in Jefferson County with an estimated population of 20,808.[4]
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Did you know?
Historically, more marathons are run in the month of October than any other month (in the U.S.).
