The Round the Sound event is a charity swim around Harrington Sound, Bermuda, raising funds for the Bermuda Zoological Society. Participants follow an anti-clockwise loop with checkpoints and course markers. Entry is exclusively through official registration, with no day-of or late entries permitted. Overseas participants can purchase a Visitor Package for additional services. The event concludes at the Bermuda Aquarium with a prize-giving and social gathering. Safety measures, including safety boats and checkpoints, ensure swimmer safety. Volunteers play a crucial role, and the event adheres to regulations set by Bermuda Open Water Swimming Ltd.