The Lake Zurich Swim belong to the world's longest swimming marathon races. It is held annually in August and is organized by the Sri Chinmoy Marathon Team.
The participants swim from RapperswilCoordinates: 47°13′40″N 8°48′47″E / 47.227690°N 8.812953°E to Zurich, with a total course length of 16.16 miles (26.01 km).