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Marathons found in Illinois in October

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Marathons in Illinois in October 2025

Find A Race is the US's favourite event listings site. Check out our list of October 2025 Marathons in Illinois below.

Race Calendar: Marathons found in October

🚀Boosted

Run for Donuts 5K/10K/13.1 CHICAGO/EVANSTON

Evanston, Illinois
04 Oct 25
$32.80 - $48.70
🚀Boosted

Cheers to Oktoberfest Run 5K/10K/13.1 CHICAGO/EVANSTON

Evanston, Illinois
04 Oct 25
$32.80 - $48.70
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Cheers to Oktoberfest Run 5K/10K/13.1 CHICAGO/EVANSTON

Evanston, Illinois
04 Oct 25
$32.80 - $48.70

Run for Donuts 5K/10K/13.1 CHICAGO/EVANSTON

Evanston, Illinois
04 Oct 25
$32.80 - $48.70

Run Against Breast Cancer 5K/10K/13.1 CHICAGO/EVANSTON

Evanston, Illinois
18 Oct 25
$32.80 - $48.70

International Sloth Day Run 5K/10K/13.1 CHICAGO/EVANSTON

Evanston, Illinois
18 Oct 25
$32.80 - $48.70
Showing 1-4 of 4 results