Quadruple Channel crossing

TRACK.RS course of Chloë McCardel on her quadruple Channel crossing that ended after 24 hours 51 minutes on the third leg across the English Channel. Courtesy of Evan Morrison of the Marathon Swimmers Federation

noun - A quadruple channel crossing is a four-way crossing of the English Channel or any channel.

Synonym

Carina Bruwer (South Africa) completed a four-way crossing of the Strait of Messina between Italy to Sicily on 20 June 2014 in 3 hours 59 minutes 26 seconds.
Ned Denison (USA/Ireland) completed a four-way crossing of the Strait of Messina between Italy to Sicily on 20 June 2014 in 3 hours 57 minutes 32 seconds.
On 17 September 2019, Sarah Thomas (USA) completed an unprecedented 134 km four-way crossing of the English Channel in 54 hours 10 minutes 0 seconds at the age of 37 where she swam from England to France to England to France and back to England with escort pilot Eddie Spelling on Anastasia.
On 14 August 2021, Greg O'Connor (USA) completed a 30.6 km four-way crossing of Lake Willoughby in Vermont in 11 hours 5 minutes (2:23 on first leg + 2:37 on second leg + 2:42 on third leg + 3:23 on fourth leg).
On 16 August 2021, Nadine Bennett (Canada) completed a 32 km four-way crossing of Lake Willoughby in Vermont in 13 hours 8 minutes (2:54 on first leg + 3:06 on second leg + 3:23 on third leg + 3:35 on fourth leg).