Jersey is the largest and southernmost of the Channel Islands. First circumnavigation swim successfully completed in 1969; fastest circumnavigation swim is held by Julia Galloway in 9 hours 32 minutes
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.