Fastest 5Ks in Illinois
The Illinois 5Ks where finishers run fastest, ranked by median finish time over each race's last three years of results.
- 126:29median finish
- 227:01median finish
- 328:13median finish
- 428:26median finish
- 528:30median finish
- 628:38median finish
- 728:44median finish
- 828:50median finish
- 9Greenville University Panther 5KGreenville364 finishers over 3 yearsLast run Oct 17, 2026 46°F race morning29:23median finish
- 10Route 66 Mother Road 5K Foot RaceSpringfield209 finishers over 3 yearsLast run Sep 27, 2026 62°F race morning29:35median finish
- 1129:42median finish
- 1229:47median finish
- 1330:49median finish
- 1430:56median finish
- 1531:18median finish
- 1631:20median finish
- 1731:21median finish
- 1831:23median finish
- 1931:24median finish
- 2031:31median finish
- 2131:34median finish
- 2231:44median finish
- 2331:49median finish
- 2431:52median finish
- 2531:59median finish
The top 25 of 134 ranked 5Ks in Illinois.
Fastest 5Ks by state
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Common questions
What is the fastest 5K in Illinois?
By the results we track, Storm the Castle 5K Walk/Run in Peoria: its median finisher runs 26:29, 8:31 per mile, over its last 3 years. Next is Lake Bluff PTO Pumpkin Chase at 27:01.
How are the races ranked?
By the median finish time of each race's last three years of results: the time half its finishers beat. A race needs at least 200 finishers to be ranked. It reflects the course, the usual weather and who enters: races that draw serious runners rank high.
Which 5K is best for a personal record?
Look for a flat course, a cool race morning and a field near your pace, so you have people to run with. The races here are where finishers run fastest; check each one's course and weather, shown in its listing.