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2025 DATES ANNOUNCED!

We're going back to basics in 2025, consolidating our efforts into the original four weekday sessions and changing some of event formats (specifically the Aquathlon option). More details will be released soon. Preliminary dates are listed below. Registration is set to open in mid-March (exact date TBD). Check back for details on this site.

Open Water Swim Details


2025 dates are listed below. Participants will select from various event options during the registration process. Registration will open in March.

#1  Tue, May 27
#2  Tue, June 24
#3  Tue, July 22
#4  Tue, August 19


OWS CHICAGO offers three unique ways to participate, subject to each event date. Click below for details:


 > Open Water Swim Clinic
: Small group instruction for beginner, intermediate or advanced swimmers.

 > Swim-On-Your-Own: For those who prefer to utilize the event services but swim independently

 > Competitive Aquathlon: Swimmers complete a 750m or 1.5k swim followed by a 3.1 mile (5k) run.

Swim Clinics Swim On Own Aquathlon
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