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Half Marathons found in Illinois in August
View all ↓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
RAMP River Run – 3K, 5K, & 1/2 Marathon Run
Rockford, Illinois
16 Aug 25
Free - $80.50
🚀Boosted
Fly with the Eagles Half Marathon-SUMMER EDITION!
Southern, Illinois
18 Jul 25 - 10 Aug 25
$28.33
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RAMP River Run – 3K, 5K, & 1/2 Marathon Run
Rockford, Illinois
16 Aug 25
Free - $80.50
Labor Day Run 5K/10K/13.1 CHICAGO/EVANSTON
Chicago, Illinois
30 Aug 25
$32.80 - $52.94
Sunrise Marathon 5K/10K/13.1 CHICAGO/EVANSTON
Chicago, Illinois
30 Aug 25
$32.80 - $52.94
Fly with the Eagles Half Marathon-SUMMER EDITION!
Southern, Illinois
18 Jul 25 - 10 Aug 25
$28.33
Run for Mental Health 5K/10K/13.1 CHICAGO/EVANSTON
Chicago, Illinois
16 Aug 25
$32.80 - $52.94
The Cookie Dash Run 5K/10K/13.1 CHICAGO/EVANSTON
Chicago, Illinois
16 Aug 25
$32.80 - $52.94
Showing 1-6 of 6 results