Illinois Running calendar 2025-2026

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Explore the best running races in Illinois for 2025-2026! Our updated list features 277 exciting races across the state. Find your next race in Illinois below and join the running community at these great events!

May 2025
May
11
Sunday

Quad Cities Distance Classic

5 km 13 mi
May
17
Saturday

YMCA Springfest Fun Run 5k

5 km
May
17
Saturday

Galena Sky Trail Races

Backyard Ultra 4 hr 8 hr
May
17
Saturday

Chicago 11 Hour Endurance Run

Backyard Ultra 7 hr 11 hr
May
17
Saturday

Ducky Dash

5 km
May
17
Saturday

Run the Hills 5k

5 km
May
17
Saturday

QCKG Tri-It Triathlon

Triathlon
May
17
Saturday

Run for D103 5K

5 km
May
17
Saturday

Race for Peace 5K

5 km
May
18
Sunday

Dash for the Dogs 5K

5 km
May
18
Sunday

Chicago Spring Half Marathon

10 km 21 km
May
18
Sunday

Lake Lou Yaeger Triathlon

Triathlon
May
18
Sunday

I Got Your Six Walk/Run

2 mi 5 km 10 km
May
24
Saturday

Run for Heroes Half Marathon

5 km 10 km 13 mi
May
24
Saturday

LIFT Duathlon

Duathlon
May
24
Saturday

Frontline OCR

Obstacle Run
May
24
Saturday

Western Springs Tower Trot

5 km 10 km
May
24
Saturday

Red Cedar Trail Half Marathon

Trail Run 13 mi 38 km
May
25
Sunday

The Memorial 5K

5 km
May
25
Sunday

Race to the Flag

5 km
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