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Half Marathons found in Illinois in October
View all ↓Half Marathons in Illinois in October 2025
Find A Race is the US's favourite event listings site. Check out our list of October 2025 Half Marathons in Illinois below.
Race Calendar: Half Marathons found in October
πBoosted
Run Stephenson County
Orangeville, Illinois
Sat 18 Oct 25
$54.00 - $85.80
πBoosted
International Sloth Day Run 5K/10K/13.1 CHICAGO/EVANSTON
Chicago, Illinois
Sat 18 Oct 25
$32.80 - $52.94
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Spooky Sprint - Greater Chicago
Shorewood, Illinois
Sat 18 Oct 25
$20.83 - $73.94
Run Stephenson County
Orangeville, Illinois
Sat 18 Oct 25
$54.00 - $85.80
Chicago Fall Classic Half Marathon, 10K & Hot Cider Hustle 5K
Chicago, Illinois
Sat 18 Oct 25
$14.94 - $135.00
Galena River Fall Half Marathon & 8k
Galena, Illinois
Sat 25 Oct 25
$80.99
Riverview Ramble Half Marathon
Mount Carmel, Illinois
Sat 25 Oct 25
$38.65 - $70.45
Haunted Halloween Half Marathon & 5km
Chicago, Illinois
Sun 26 Oct 25
$64.85 - $101.95
Tri-State Warrior Run
Quincy, Illinois
Sun 26 Oct 25
$11.60 - $48.70
Run Against Breast Cancer 5K/10K/13.1 CHICAGO/EVANSTON
Chicago, Illinois
Sat 18 Oct 25
$32.80 - $52.94
International Sloth Day Run 5K/10K/13.1 CHICAGO/EVANSTON
Chicago, Illinois
Sat 18 Oct 25
$32.80 - $52.94
Showing 1-9 of 9 results