Half Marathons in Illinois
Illinois has 16 upcoming half marathons scheduled for 2026. Chicago is the busiest city with 5 races, ahead of Elk Grove Village (3) and Southern (1).
Showing all 16
Running
Christmas in July Half Marathon and 5K (Chicago area)
July 18, 2026
Elk Grove Village, IL
Running
Golden Harvest Half Marathon & 5k/10k - Greater Chicago
September 27, 2026
Greater Chicago, IL
Running
14th Annual Springfield Marathon & Harvest Wind Half Marathon & 10K
November 7, 2026
New Berlin, IL
Top Cities for Half Marathons in Illinois
Frequently asked questions
How long is a half marathon?▾
A half marathon is 13.1 miles (21.1 kilometers). It is one of the most popular race distances in the US, attracting over 2 million finishers annually. Browse half marathons on RACE to find one near you.
How should I train for my first half marathon?▾
Most beginner training plans are 10-12 weeks long and gradually build your weekly mileage. A typical plan includes 3-4 runs per week with one long run that peaks around 10-11 miles before race day.
What is a good half marathon time?▾
The average US half marathon finish time is about 2 hours 10 minutes. Beginners often aim for under 2:30, while competitive runners target sub-1:45. Focus on finishing strong rather than a specific pace for your first race.
What are the biggest half marathons in the US?▾
The largest include the United Airlines NYC Half, RBC Brooklyn Half, Disney Princess Half Marathon, and the Rock 'n' Roll series events in Las Vegas, Nashville, and San Diego. You can find all of these on RACE.