The Castle to Castle Swim is a one mile open water sea swim across the mouth of the River Fal

12 JUNE 2016: The Castle to Castle Swim is a one mile open water sea swim across the mouth of the River Fal. The swim starts at Pendennis Castle in Falmouth and finishes at St Mawes Castle on the Roseland Peninsula. Details will be updated on the RNLI events page.