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Watch for this year's 43rd annual Chicago Triathlon to kick off on Sunday, August 25, 2024 beginning at 6AM at Chicago's Downtown Lakefront, lasting until about 3PM.

Leading up to the main event are two competitions held the day before - including a beginners triathlon at 7:30AM on Saturday, August 23, 2024 at Chicago's Foster Avenue Beach followed by a kids' triathlon!

Of course, the main event on Sunday draws the biggest crowds, beginning with the swim in Monroe Street Harbor. The swim portion remains either 1.5 kilometers or .75 kilometers, depending on whether competitors are participating in the International distance or the Sprint distance.

In Chicago, a 3-in-1 endurance test.awaits the world's fiercest competitors (see more on Facebook).

After the swimming portion comes ...the bike race. Competitors bike for either 40 kilometers or 22 kilometers, depending on what version of the race they are participating in.

Finally, the run portion is either 10 kilometers for international distance competitors or 5 kilometers for the Sprint competitors. Both distances end at the same finish line at Hutchinson Field in Grant Park.


Chicago Triathlon course map
Chicago Triathlon
Course Map

All about the Chicago Triathlon

The Chicago Triathlon is one of the planet's most well known and well attended triathlons.

Every year in late August, athletes from all over the world converge on downtown Chicago to swim, bike, and run in a fierce competition of Olympic proportions. In fact, the Chicago Triathlon holds the Guinness record as the world's largest international distance triathlon.

The Chicago Triathlon also boasts more than a quarter of a million spectators, NOTE: The Chicago Triathlon is also always looking for volunteers, which is another great way to get out and support a truly fantastic event.

Also see -> Boston Marathon    |     London Marathon

New York City Marathon

triathlon swimmers
Keep swimming, keep swimming

Chicago Triathlon fun facts & trivia

• The first Chicago Triathlon kicked off on August 7, 1983, and had 760 participants.

• A triathlon in a major metro area proved so popular that Bud Light decided to sponsor the event the following year when participation almost doubled.

• In 2007, the Chicago Triathlon was ranked as the “World’s Largest Triathlon” with over 8,000 participants.

• The record for most number of participants was set in 2009 when entries for the Chicago Triathlon topped 9,200 triathletes.

• While the Windy City course is fairly straightforward, winds off Lake Michigan make the Chicago Triathlon one of the world's most challenging and unpredictable!

More about the Chicago Triathlon around the Web:

2024 Chicago Triathlon
- Check out the official site with info on this year's race, entry & registration details, parking and transportation, Chicago travel info and hotel stays, Triathlon weekend events, and complete results, or get interactive at the Chicago Triathlon Facebook page.

35 Years of the Chicago Triathlon - Find out more about the Triathlons hair-raising start in 1983, and more interesting Chicago Triathlon history from Chicago Athlete Magazine.



chiff 25th anniversary

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