Illinois Triathlon Calendar 2025-2026

Jun

21

Sunday

Fox Lake Sprint Triathlon

Fox Lake, Illinois

Triathlon

Jun

25

Thursday

DECU Glow Run

Forsyth, Illinois

5 km

Jun

27

Saturday

Miles for Maddog

Frankfort, Illinois

5 km 10 km

Jun

27

Saturday

Pretzel City 5k

Freeport, Illinois

5 km

Jun

27

Saturday

Tremont Triathlon

Tremont, Illinois

Triathlon

Jun

27

Saturday

Run the Runway - Wheeling

Wheeling, Illinois

5 km

Jul

4

Saturday

Warrenville Park District Firecracker 5K

Warrenville, Illinois

5 km

Jul

4

Saturday

Firecracker 5K - McLeansboro

McLeansboro, Illinois

2 mi 5 km

Jul

11

Saturday

Savage Race - Chicago

Spring Grove, Illinois

Obstacle Run 3 mi 7 mi

Jul

11

Saturday

Stockton 10k

Stockton, Illinois

5 km 10 km

Jul

18

Saturday

Run for the Bagel

Mattoon, Illinois

3 mi 6 mi

Aug

1

Saturday

College of DuPage Alumni 5k

Glendale Heights, Illinois

5 km

Aug

8

Saturday

Raceway 5K

Carpentersville, Illinois

3 km 5 km

Aug

15

Saturday

Feed My Sheep Ministry

Fairview Heights, Illinois

5 km

Aug

22-23

Sa - Su

Shawnee Hills Trail Races

Ozark, Illinois

Trail Run 13 mi 50 km 100 km 100 mi

Aug

29-30

Sa - Su

Tough Mudder - Chicago

Rockford, Illinois

Obstacle Run 5 km 15 km 8 hr