Upcoming Triathlons in Illinois

Endurance Grid lists 10 triathlons in Illinois, from August 2026 to February 2027 across 8 cities.

10
Races
8
Cities

The lay of the land

Triathlon Races in Illinois

The triathlon race calendar in Illinois is busiest in August, September, and February.

What a triathlon is

A triathlon is three sports in one race — swim, then bike, then run, back to back, with two timed transitions in between. The sprint distance — a 750m swim, 20K bike, and 5K run — makes the sport more accessible than most people think.

The swim start is exciting and chaotic but finds a rhythm fast; the bike course is usually quiet; the run brings the crowds and the finish line. Beyond fitness, the transitions between disciplines are their own skill.

Frequently Asked Questions (FAQs)

How many triathlons are in Illinois?+
Endurance Grid's Race Calendar lists 10 upcoming triathlons in Illinois across 8 cities, from August 2026 to February 2027.
What triathlon distances are offered in Illinois?+
Triathlons in Illinois include Olympic and Sprint distances.
When is triathlon season in Illinois?+
Triathlon season in Illinois runs spring through fall — the warmer months when open water is race-ready. Of the upcoming triathlons on Endurance Grid's Race Calendar, the most are in August and September.
Which Illinois cities have triathlons?+
Triathlons in Illinois are held in Evanston, Olney, Carlyle Township, Champaign, Dewitt, Monticello, O Fallon, and Oak Brook.

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