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 quadruple 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 quadruple crossing of the Strait of Messina between Italy to Sicily on 20 June 2014 in 3 hours 57 minutes 32 seconds.
Chloë McCardel (Australia) attempted the first quadruple crossing of the English Channel on 28-28 August 2017, but was pulled on her third lap after a 10 hour 26 minute first lap and a 10 hour 8 minute second lap.
Greg O'Connor completed a 20-mile quadruple crossing of Lake Willoughby in Vermont in 11 hours 5 minutes on 16 August 2021.
On 17 September 2019, Sarah Thomas 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.