International Self-Transcendence Marathon - Relay
The International Self-Transcendence Marathon-Schwimmen relay is held concurrently with the International Self-Transcendence Marathon-Schwimmen (or the International Self-Transcendence Marathon Swim), an extremely popular marathon solo and relay swimming competition in Switzerland that sells out every year with swimmers from around the world. It was founded by Sri Chinmoy, an Honour Administrator inducted in the International Marathon Swimming Hall of Fame. It is one of the longest marathon swims in the world.
City Rapperswil to Zurich