Round Jersey Solo

The world’s largest mass participation open water swimming event has different start groups for individuals of all ages and abilities.

Water temperature and winds can vary widely, especially with strong winds, but 20°C (68°F) is average. A very competitive race with elite professional marathon swimmers from around the world.

Held very early on Sunday morning before the start of the Henley Royal Regatta. It is part of a series of flat-water races including the Henley Classic, the Henley Mile, the Bridge to Bridge and the Queenford Relays between June and September.