Illinois Race Calendar

Illinois Half Marathons by Date • By City

Browse all 2021 Illinois half marathons by month below. For each race, you’ll find course maps, elevation profiles, runner reviews, and how to sign up.

When you view a race, you’ll also find contact info if you’re having problems with your registration or need to contact the race directors.

February 2021

Sat Feb 6 Iceman Half Marathon & Quarter Marathon Springfield IL
Sat Feb 13 Fly with the Eagles Half Marathon Marion IL

March 2021

April 2021

Sat Apr 3 Lake Sara Dam Run Effingham IL
Sat Apr 17 Riverboat Series Marathon Half Marathon 10K & 5K – Day 7 Vienna IL
Sun Apr 18 Naperville Women's Half Marathon Naperville IL

May 2021

July 2021

August 2021

Sat Aug 21 RAMP River Run Half Marathon 5K & 3K Rockford IL

September 2021

Sat Sep 4 Naperville Trails Half Marathon Naperville IL
Sat Sep 11 Chi Town Half Marathon & 10K Chicago IL
Sat Sep 11 Hidden Gem Half Marathon Flossmoor IL
Sun Sep 19 Fox Valley Marathon Half Marathon 20-Mile & 5K St. Charles IL
Sat Sep 25 Moraine Hills Run for the Hills Half Marathon McHenry IL
Sat Sep 25 Stone Bridge Half Marathon & 5K Roscoe IL
Sun Sep 26 Chicago Half Marathon & 5K Chicago IL
Sun Sep 26 Quad Cities Marathon Half Marathon 5K & Relay Moline IL

October 2021