Chicago is the city that is home to the most Illinois half marathons.
Illinois Half Marathon Calendar
Browse all Illinois Half Marathons in 2024-2025 by month and by city below. For each race, you’ll find the history of the half marathon and the course, the most recent year’s course maps, elevation profiles, runner reviews, pricing, and how to sign up.
We dedicate hours every month searching for races to include in the Illinois Half Marathons calendar. If you happen to see any half marathon not included, contact us at [email protected] to submit your race.
Filter Illinois Half Marathons
Race Size
Difficulty
Scenery
Type
Perfect For
Distances
Filter Illinois Half Marathons
Race Size
Difficulty
Scenery
Type
Perfect For
Distances
Featured Race
June 1, 2025
1,000-10,000 runners
Chicago, Featured
- Half Marathon, Road
January 25, 2025
500-1000 runners
Chicago, Illinois
- 5k, Half Marathon, Trail
February 8, 2025
100-500 runners
Marion, Illinois
- Half Marathon, Trail
February 8, 2025
1-100 runners
Springfield, Illinois
- 10K, 5k, Half Marathon, Road
March 15, 2025
1-100 runners
Lemont, Illinois
- Half Marathon, Trail
March 16, 2025
500-1000 runners
Cary, Illinois
- Half Marathon, Road
April 5, 2025
1-100 runners
Chicago, Illinois
- 10K, Half Marathon, Road
April 5, 2025
500-1000 runners
Springfield, Illinois
- Half Marathon, Road
April 13, 2025
500-1000 runners
Naperville, Illinois
- 5k, Half Marathon, Road
May 3, 2025
1-100 runners
Frankfort, Illinois
- 10K, Half Marathon, Trail
May 5, 2025
500-1000 runners
Schaumburg, Illinois
- Half Marathon, Marathon, Trail
May 18, 2025
1-100 runners
Chicago, Illinois
- 10K, Half Marathon, Road
June 1, 2025
1-100 runners
Highland Park, Illinois
- 5k, Half Marathon, Road
June 1, 2025
1,000-10,000 runners
Chicago, Featured
- Half Marathon, Road
October 18, 2025
1-100 runners
Charleston, Illinois
- 10K, 5k, Half Marathon, Trail, Ultramarathon
October 26, 2025
100-500 runners
Chicago, Illinois
- 5k, Half Marathon, Trail
November 29, 2025
1,000-10,000 runners
Schaumburg, Illinois
- 5k, Half Marathon, Trail
Running in Illinois
FAQ
What are the most popular Illinois half marathons?
The most popular Illinois half marathon is the Bank of America Chicago 13.1 in 2023 had over 5,000 finishers. Followd by the Life Time Chicago Spring Half in 2024 with 4,828 finishers. And then the Christie Clinic Illinois Race Weekend half marathon with 2,179 finishers.
What are the best Illinois half marathons for beginners in 2024?
When it comes to best half marathons in Illinois for beginners, we recommend the Bank of America Chicago 13.1 for it’s race production and crowds, the Life Time Chicago Spring for the prettiest course through downtown Chicago and along Lake Michigan, and the Quad Cities Half Marathon in Moline because of it’s flat, scenic course.
What are the most popular cities to run Illinois half marathons?
