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
Sat Mar 13 | Cactus Classic Trail Race Marathon Half Marathon & 10K | Manito IL |
Sun Mar 14 | March Madness Half Marathon | Cary IL |
Sat Mar 27 | Southern Illinois Spring Classic Half Marathon & 5K | Lawrenceville IL |
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
Sat May 1 | Illinois Marathon Half Marathon 10K 5K & Relay | Champaign IL |
Sat May 1 | Lake Run Half Marathon 12K 7K & 3-Mile | Hudson IL |
Sun May 2 | Great Western Half Marathon | St. Charles IL |
Sat May 8 | Starved Rock Country Marathon & Half Marathon | Ottawa IL |
Sun May 23 | Chicago Spring Half Marathon & 10K | Chicago IL |
Sun May 23 | Chicagoland Spring Marathon & Half Marathon | Schaumburg IL |
July 2021
Tue Jul 13 | Heartland Series Marathon Half Marathon 10K & 5K – Day 4 | Fulton IL |
August 2021
Sat Aug 21 | RAMP River Run Half Marathon 5K & 3K | Rockford IL |
September 2020
Sat Sep 26 | Stone Bridge Half Marathon & 5K | Roscoe IL |
October 2020
Sat Oct 3 | Prairie State Half Marathon & 10K | Long Grove IL |
Sun Oct 11 | Springfield Marathon Half Marathon & Quarter Marathon | Springfield IL |
Sun Oct 25 | Dam Site Marathon & Half Marathon | Hudson IL |
Sat Oct 31 | H^3 Halloween Half Marathon & 5K | Chicago IL |