Upcoming Half Marathons in Illinois

Endurance Grid lists sixty half marathons in Illinois, from October 2026 to September 2027 across 20 cities.

60
Races
20
Cities
11
Sports

Running races in Illinois

Your next race is out there. Go find it.

All Illinois Running Races

Frequently Asked Questions

How many half marathons are in Illinois?
Endurance Grid's Race Calendar lists 60 upcoming half marathons in Illinois, in 20 cities, from October 2026 to September 2027.
How long is a half marathon?
A half marathon is a running race where athletes run 13.1 miles long (21.1 kilometers) for time.
Which Illinois cities host half marathons?
Half marathons in Illinois are held in Chicago, Greater Chicago, Lemont, Shorewood, Springfield, Benton, Decatur, Elk Grove Village, Galena, and LeRoy, plus 10 other cities.
What other race distances are available in Illinois?
Beyond half marathon, Illinois races cover a wide range of distances. Illinois also has 5Ks, 10Ks, and marathons for running races. Additionally, Endurance Grid's Race Calendar also covers other sports, with aquabike, road cycling, duathlon, gravel, obstacle course, rucking, running, swimming, trail running, triathlon, and ultra races of various distances.