Welcome to the 35th Annual Transamerica Chicago Triathlon Weekend!

Downtown Chicago is preparing to host 9,500 athletes at the world’s greatest short course triathlon destination. This year’s event features a diverse set of athletes from more than 44 U.S States and 20 countries.

Race weekend hosts a variety of events and activities, starting with the Multisport & Fitness Expo. This year, the mandatory Athlete Briefings hosted at the Expo are now on a first-come, first-served basis (no RSVP required). Sessions begin approximately every 30 minutes, and span the duration of the Expo.

Also new this year is the inaugural Gildan Underwear Run – a fun, charitable shakeout run held Friday, August 25 at Queen’s Landing on the Chicago lakefront.

As always, the Kids’ and SuperSprint races launch Saturday morning, followed by Sunday’s signature International and Sprint races.

Before the big weekend is finally here, be sure to download the 2017 Athlete Guide. This 50+ page info source contains schedules, maps, race logistics and everything else guaranteed to help you find success over the weekend.

> 2017 Transamerica Chicago Triathlon Athlete Guide

Welcome to Chicago, 35 years in the making.
Best wishes for an incredible weekend!