The Cedar Island Swim is a celebrated open water charity event held in the Avalon back bays, recognized by the World Open Water Swimming Association as one of America's top swims. The swim circles Cedar Island and features a course designed to take advantage of tidal currents. Proceeds benefit the Challenged Athlete Foundation-Operation Rebound. Participants receive a variety of gear, including a swim cap and chip timing. Safety measures are emphasized with on-water support and specific course guidelines. The event is part of the TKC Open Water Summer Swim Series, culminating in a "Triple Crown" award for participants who complete all series swims.