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Half Marathons found in Illinois in September
View all ↓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
Naperville Trails Half Marathon & 10K
Wheaton, Illinois
06 Sep 25
$51.74 - $123.74
Spooky Sprint - Springfield
Springfield, Missouri
21 Sep 25
$18.83 - $44.28
Belleville Main Street Marathon & Half Marathon
Belleville, Illinois
27 Sep 25
$48.70 - $54.00
Stone Bridge Half Marathon and 5k
Roscoe, Illinois
27 Sep 25
$27.50 - $59.30
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