The South32 Rottnest Channel Swim is a 19.7km open-water swim from Cottesloe to Rottnest Island (Wadjemup), is one of Australia’s iconic community sporting events and the largest open water swim in the world. Held on a Saturday in late February, the Rottnest Channel Swim sells out annually and, with more than 12,000 people participating and attending, the event brings more people to Rottnest Island than any other day of the year. Over its 31-year-history, the event has improved the health, fitness and wellbeing of many in the community, while providing a unique team experience characterised by mateship and comradery. It is organized by the Rottnest Channel Swimming Association, the first organization honoured by the Australian Marathon Swimming Hall of Fame.