609 in 2015 and later

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

The Big Brutal Swim 2015, Llanberis, Llanberis, North Wales, Great Britain

Date: 
Sunday, 30 August, 2015 - 07:00

The distances available are 2.5k, 5k and 10k.

http://brutalevents.co.uk/bbs.html