Triathlon Calendar near Crystal Lake 2026-2027

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.

The 9th annual Fox Lake Sprint Triathlon offers a scenic sprint course in Illinois. Swim past inflatable duck buoys, bike rolling hills, and finish on a paved path. It's also the first event in an optional three-race series with combined awards.

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.

The Fontana Triathlon offers swim, bike, and run events along scenic Geneva Lake. Participants can choose from Olympic or Sprint distances, either individually or as a relay. The race includes timing, photos, and a post race party.