5K races in Illinois, United States — 2026 running calendar

Oct

24

Marshall Rotary presents: Jack-O-Jog 2026

Marshall, Illinois, United States

Running

1.6K 5K

Oct

24

World Run Day Virtual 5K - Aurora

Aurora, Illinois, United States

$19.99

Running

5K

Oct

24

Ihsa XC Regional Hosted by Tuscola

Tuscola, Illinois, United States

Running

4.8K

Oct

18

Run, Walk & Roll Geneva

Geneva, Illinois, United States

Running

5K

Oct

18

Oktoberfest Rotary Run

Bloomington, Illinois, United States

Running

5K 1.6K Brat Dinner + Shirt (No Race) Brat Dinner (No Race)

Oct

18

23rd Annual This Run's For Jack 2026

Glen Ellyn, Illinois, United States

Running

5K 16.1K

Oct

18

Richardson Farm Fall 5K & 10K with Family 1 Mile Adventure Run

Spring Grove, Illinois, United States

Obstacle race Running

5K 10K 1.6K +6

Oct

18

Frank Lloyd Wright Races

Oak Park, Illinois, United States

Running Walking

10K 5K 1.6K Lil Runners - 3 Year Old +3

Oct

18

Paws for a Cause 5k

Urbana, Illinois, United States

Running

5K

Oct

18

Bolingbrook Howl-O-Ween 5K

Bolingbrook, Illinois, United States

Running

5K

Oct

18

Evansville River Run 5k and Walk

Evansville, Illinois, United States

Running

5K

Oct

18

How 5K

Chicago, Illinois, United States

Running

5K +1