Oak Brook
Triathlon Calendar near Oak Brook 2026-2027
Monthly updates for Oak Brook
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Explore the top triathlons near Oak Brook for 2026-2027! We've gathered 10 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.
This indoor triathlon features 15-minute segments of swimming, stationary biking, and running. All proceeds support the Crisis Center for South Suburbia. It's a non-competitive event focused on community support rather than prizes.
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.
June 2026
Leon's Triathlon, also known as America's Race, takes place in Hammond, Indiana in early June. It features sprint and Olympic distances for individuals and relays, alongside special championships for military and first responders. The event has a foc..
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.
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.
The Chicago Triathlon takes place in August, featuring swims in Lake Michigan, bike rides on iconic city streets, and runs past famous landmarks. Races range from kids' distances to Olympic and Triple Challenge events, with options for individuals an..
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.