Illinois

Illinois Triathlon Calendar 2025-2026

Name: Miles for Smiles Color Run 5K
Start: 2025-05-02
End: 2025-05-02
Location: Holiday Hills

Explore the best triathlons in Illinois for 2025-2026! Our updated list features 319 exciting races across the region. Find your next race in Illinois below and join the running community at these great events!

Illinois Triathlon Calendar 2025-2026

Miles for Smiles Color Run 5K

Fight Hunger 10K

Windmill Whirl

HOH 5K Run/Walk

Mattea's Joy SuperHero 5K

Hearts Desire 6-Hour Endurance Run

YMCA Spring Chicken 5K

Hydrants, Hoses, and Heroes 5K

Annual Law Day 5K

Braveheart CAC Superhero 5k Run/Walk

The Lake Run

Byron Rocks 10k

Run For Rett

Empower Run 5k

White Lily Project 5k Run and Walk

The Best Races - Evanston

The Best Races - Chicago Loop

Lincoln-Way Half Marathon

Splashn 5k

Great Western Half-Marathon & 10K