10K races in Illinois, United States — 2026 running calendar

Western Springs Tower Trot

Western Springs, Illinois, United States

May 23, 2026 (Sat)

Walking, Running

5K 10K 15K +3

Memorial Day Run 5K/10K/13.1 CHICAGO/EVANSTON

Chicago, Illinois, United States

May 23, 2026 (Sat)

Running

5K 10K Half-Marathon 1.6K +2

Goose Creek Classic

Odin, Illinois, United States

May 23, 2026 (Sat)

Running, Walking

5K 10K 2.5K 1K

Frontline OCR

Byron, Illinois, United States

May 23, 2026 (Sat)

Obstacle race, Running

10K 5K 1.6K +12

Run for Heroes Half Marathon, 10K, 5K hosted by Revive Vienna

Vienna, Illinois, United States

May 23, 2026 (Sat)

Running

5K 10K 0.4K

Darien Dash

Darien, Illinois, United States

May 17, 2026 (Sun)

Running

10K 5K 1.6K

I Got Your Six Walk/Run

Bourbonnais, Illinois, United States

May 17, 2026 (Sun)

Running, Walking

5K 10K 3.2K +3

Starved Rock Country Marathon

Ottawa, Illinois, United States

May 9, 2026 (Sat)

Running

Marathon Half-Marathon 10K 5K +2

Mother's Day 5K, 10K & Half Marathon

Lake Zurich, Illinois, United States

May 8, 2026 (Fri) – May 10, 2026

Running

5K 10K Half-Marathon

Chicagoland Spring Marathon, Half Marathon & 10K

Schaumburg, Illinois, United States

May 3, 2026 (Sun)

Running

Marathon Half-Marathon 10K +5

Hometown Half Marathon & 5k/10k - Greater Chicago

Chicago, Illinois, United States

May 2, 2026 (Sat)

Running

1.6K 5K 10K Half-Marathon +1

Kirby Derby

Monticello, Illinois, United States

May 2, 2026 (Sat)

Running

10K 5K