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Half Marathons found in Illinois in September

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Half Marathons in Illinois in September 2025

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

Race Calendar: Half Marathons found in September

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Belleville Main Street Marathon & Half Marathon

Belleville, Illinois
27 Sep 25
$96.88 - $107.75
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Miles of Madness

Pekin, Illinois
27 Sep 25 - 28 Sep 25
$38.10 - $2,081.00
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Naperville Trails Half Marathon & 10K

Wheaton, Illinois
06 Sep 25
$57.49 - $123.74

National Chocolate Day: Run for Chocolates CHICAGO/EVANSTON

Chicago, Illinois
13 Sep 25
$32.80 - $52.94

Hedgehog Dash 5K/10K/13.1 CHICAGO/EVANSTON

Chicago, Illinois
13 Sep 25
$32.80 - $52.94

Divas Chicago Half Marathon and 5k

Chicago, Illinois
13 Sep 25
$53.99 - $96.39

Belleville Main Street Marathon & Half Marathon

Belleville, Illinois
27 Sep 25
$96.88 - $107.75

National Singles Day: Singles & Friends Running Club CHICAGO/EVANSTON

Chicago, Illinois
27 Sep 25
$32.80 - $48.70

Stone Bridge Half Marathon and 5k

Roscoe, Illinois
27 Sep 25
$27.50 - $59.30

National Coffee Day: Run for Coffee CHICAGO/EVANSTON

Chicago, Illinois
27 Sep 25
$32.80 - $48.70

Miles of Madness

Pekin, Illinois
27 Sep 25 - 28 Sep 25
$38.10 - $2,081.00

Life Time Chicago Half Marathon + 5K

Chicago, Illinois
28 Sep 25
$71.99 - $162.73
Showing 1-10 of 10 results