WOWSA Ultra Marathon Series

The course marks the border between the Bay of Gdańsk and the expanse of the Baltic Sea. The first person to accomplish the swim was Gertruda Skowrońska on July 15, 1928. 

La Isla Open Water is the only one 20k and 30k competition in Presa Zimapán, Cadereyta de Montes, Querétaro, Mexico held at the end of October. It is one of the Mexico’s Top 50 Open Water Swims. The races attracts about 30 swimmers in the 20k and 30k distances and 300 swimmers in the other distances.

Each summer since 1955, the Traversée internationale du lac St-Jean attracts the world’s elite professional open water swimmers to Roberval. One of the world’s most prestigious professional races with a long and rich history. Thousands line the banks to greet the swimmers at the finish. Water temperature and winds can vary, but water temperature under 20°C (68°F) is expected.

The Trans Tahoe Relay started in 1976 and has become an annual reunion of the global open water swimming community. Traditionally done as a relay, WOWSA has partnered with the Olympic Club to offer Trans Tahoe Solo (15.5k) as part of the Ultramarathon Swim Series.

Capri-Napoli is the oldest marathon among the competitions of the FINA world open water swimming circuits and one of the most fascinating and difficult swimming marathon.
Until 1992 it awarded the long distance world title.
Now it is leg of the annual World UltraMarathon Swim Series.