609 in 2015 and later

648 past in 2015 (updated 17-07-'15)

Anglian Water Swim, Grafham Water, Buckden, Cambridgeshire, Great Britain

Date: 
Sunday, 24 May, 2015 - 10:00 to 15:00

Great Anglian Water Swim, 750, 1.5k, 3k, 5.2k Open Water Races.

http://nicetrievents.com/events/anglian-water-great-swim-750-1-2-3-mile-open-water-swims