10K Races in Illinois
Illinois has 58 upcoming 10K races scheduled for 2026. Most of the calendar falls in the warmer months: 35 of 58 races (60%) take place between May and September, with September (12 events) the busiest month. 35 of those 58 races (60%) take place in Chicago. Excluding Chicago, the calendar is 23 races across 22 other cities.
10K races by month in Illinois
Sep (12) · Jul (10) · Oct (9) · Nov (8) · Aug (6) · Dec (5) · Jun (4) · May (3) · Apr (1)
Showing 24 of 58
Running
Hoffman Estates Stars & Stripes Half Marathon, 10K & 5K
June 27, 2026
Hoffman Estates, IL
Running
July 4th Run 5K/10K/13.1 CHICAGO/EVANSTON
Chicago, IL
Running
July 4th Run 5K/10K/13.1 CHICAGO/EVANSTON
July 5, 2026
Chicago, IL
Running
Stan's Donut 10K, 5K, and Kids Dash
Chicago, IL
Running
Stan's Donut 10K, 5K, and Kids Dash
July 19, 2026
Chicago, IL
Top Cities for 10K Races in Illinois
Frequently asked questions
How long is a 10K race?▾
A 10K is 6.2 miles (10 kilometers). It is a popular step-up distance from the 5K and a great intermediate goal for runners building toward a half marathon.
What is the largest 10K in the US?▾
The AJC Peachtree Road Race in Atlanta is the largest 10K in the world, drawing over 60,000 runners every Fourth of July. The BOLDERBoulder in Colorado is another massive 10K with 45,000+ participants.
What is a good 10K time?▾
The average US 10K finish time is around 55-60 minutes. Competitive runners aim for sub-45 minutes, while beginners often target finishing under 1 hour 10 minutes.
How do I train for a 10K?▾
A typical 10K training plan is 8-10 weeks with 3-4 runs per week, including one longer run that builds to 6-7 miles. If you can comfortably run a 5K, you are ready to start training for a 10K.