Half Marathons in Illinois in October
12 half marathons in Illinois are on the calendar for October 2026–2027, in Chicago, Orangeville, Naperville, Peoria and more. Tap a race for the course, weather, past results and how to register.
Chicago Fall Classic Half Marathon, 10K & 5K · Chicago, Illinois
Run Stephenson County · Orangeville, Illinois
Naperville Half Marathon · Naperville, Illinois
Screaming Pumpkin · Peoria, Illinois
Haunted Halloween Half Marathon & 5km · Chicago, Illinois
Spooky Sprint - Greater Chicago · Shorewood, Illinois
Tri-State Warrior Run · Quincy, Illinois
Galena River Fall Half Marathon & 8k · Galena, Illinois
Halloween Trick or Trot Run 5K/10K/13.1 CHICAGO/EVANSTON · Chicago, Illinois
PB&J Fuel Run 5K/10K/13.1 CHICAGO/EVANSTON · Chicago, Illinois
Riverview Ramble Half Marathon · Mount Carmel, Illinois
2027 Des Plaines River Trail Race · Des Plaines, Illinois