The most southerly swim was at latitude -70º and was achieved by Ram Barkai (South Africa), in Queen Maud Land, Antarctica, on 7 February 2008.

Ram swam 1 km in water temperature of 1ºc which took 22 min 5 sec. The exact co-ordinate of the start point of the swim is latitude -70º 45.44 and longitude -11º 39.04