There are two categories: solo swimmers that compete under standard rules and relays of 2 or 4 swimmers (no wetsuits, wetsuits, corporate relay, schools relay) • Additional Information: The Cape Long Distance Swimming Association offers information on swimming various distances between 7-35 kilometers between Cape Town and Robben Island, False Bay, Cape Point and other locations with water temperatures range between 13°C (55°F) and 19°C (66°F). Robben Island is located 12 km offshore from Cape Town, South Africa. Robben Island was used as a cruel prison for nearly 400 years, including the imprisonment of Nelson Mandela from 1964-1982. Today, the island is a World Heritage site and offers one of the world’s great channel challenges. Since it was first crossed in 1899 by Henry Charteris Hooper, nearly 300 individuals have successfully swum between the mainland and Robben Island.