The stage is set for an exhilarating multisport spectacle in the heart of the Windy City. Here’s your comprehensive guide to diving into the action.

Chicago's Premier Multisport Event Makes a Grand Return

Mark your calendars for August 23-24, 2025, as downtown Chicago transforms into a dynamic triathlon arena. With the registration gates now open, athletes are quickly securing their spots for a swim in the crisp waters of Lake Michigan, a bike ride past the city's iconic landmarks, and a run to the finish line in scenic Grant Park.

Last year, over 8,500 athletes from various corners of the globe converged here to push their limits. Whether you're a seasoned triathlete or a newcomer to the multisport scene, the 2025 Chicago Triathlon is your gateway to a challenge that matches your skills and ambitions.

This guide is your all-in-one resource for selecting the perfect race category, understanding the course nuances, and gearing up for an unforgettable experience at the Chicago Triathlon.

Event Snapshot and Weekend Itinerary

When: August 23-24, 2025
Where: Downtown Chicago, featuring a swim in Lake Michigan and a grand finale in Grant Park

Renowned as a top urban triathlon in the U.S., the Chicago Triathlon offers a unique blend of city vibes and competitive spirit, providing an unparalleled race backdrop.