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Half Marathons found in Illinois in August

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Half Marathons in Illinois in August 2025

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

Race Calendar: Half Marathons found in August

🚀Boosted

Run Mahomet

Mahomet, Illinois
01 Aug 25 - 02 Aug 25
$16.90 - $64.60
🚀Boosted

RAMP River Run 3K, 5K, & 1/2 Marathon Run

Rockford, Illinois
16 Aug 25
Free - $80.50
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Run Mahomet

Mahomet, Illinois
01 Aug 25 - 02 Aug 25
$16.90 - $64.60

RAMP River Run 3K, 5K, & 1/2 Marathon Run

Rockford, Illinois
16 Aug 25
Free - $80.50
Showing 1-2 of 2 results