This is a closed event with a maximum of 50 swimmers allowed in any of the three distances. Initially, the swim is open only to members of the Mid Sussex and East Grinstead Triathlon Clubs, although invited guests will be allowed to swim if there are spaces available. Participants can take part in one, two or, for those who are so minded, all three of the distances. 5 km (5 laps), Starting at 14:00 3 km (3 laps), Starting at 16:15 1 km (1 laps), Starting at 17:45