St. Charles
Triathlon Calendar near St. Charles 2026-2027
Monthly updates for St. Charles
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Explore the top triathlons near St. Charles for 2026-2027! We've gathered 8 exciting races in the area. Check out our detailed list below to find your next local race.
March 2026
This indoor triathlon in Saint Charles offers timed swim, bike, and run segments for adults and youth. The event uses a wave start and takes place entirely inside the Norris Recreation Center. It supports local aquatics and a youth triathlon team.
Grab a partner for the Dream Team Dri Tri at Oak Brook Park District on March 8, 2026, a two person relay mixing indoor rowing, air assault biking and laps on the track. Open to ages 12 and up, registration closes March 5.
Test your endurance at this indoor swim bike and run event in Lemont where athletes compete in timed heats using spin bikes and treadmills. Reach your maximum distance across three different disciplines to earn age group awards.
July 2026
The Lake Zurich Triathlon offers a variety of distances at Paulus Park. Choose from Olympic or Sprint triathlon, duathlon, or aqua bike formats, with options for individuals or relay teams.
Experience the original Illinois Aquathon at Three Oaks Recreation Area featuring swim and run distances for all ages. Support a local cause while competing in a unique quarry swim and scenic trail run.
A youth swim-run event in Geneva with two age categories. Juniors (6-10) tackle a 100m swim and 1k run, while Seniors (11-17) complete a 200m swim and 2k run. The event features a pool swim, a trail run, and finisher medals for all participants.
August 2026
The annual Naperville Sprint Triathlon offers several race formats from Centennial Beach Park. Participants can tackle a swim, bike, and run course individually or as a relay.
November 2026
An indoor triathlon featuring a row, cycle, and run on fixed equipment and a track. Athletes compete in timed heats, with top finishers earning the Golden Turkey prize.