October Marathons in Illinois on Sundays
1. Chicago Marathon
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Oct 12, 2025Sunday
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26.2M run
More Information
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Boston Marathon Qualifier
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Chicago, IL
Cook County, IL
For the love of all that Is good And moisture wicking...
Though we Try To be accurate And On top Of things... Race details can change When we aren't lookin. And once in a while we simply make a mistake.
ALWAYS visit the race's website for the most complete and accurate race information.
ALWAYS visit the race's website for the most complete and accurate race information.