The iconic distance
The English Channel swim
The 33.3km crossing that made open water history. Learn its story, then swim the same distance in warm water across four days.
See Our EventsThe 33.3km crossing that made open water history. Learn its story, then swim the same distance in warm water across four days.
See Our EventsThe English Channel is 33.3km at its shortest crossing, the distance that made open water history from Captain Webb in 1875 onwards. UltraSwim 33.3 carries that exact distance into warm water across four days, so the iconic challenge is achievable without the cold and the shipping lanes.
The English Channel is 33.3km at its shortest crossing. Captain Matthew Webb swam it in 1875; Trudy Ederle followed in 1926. UltraSwim 33.3 carries that exact distance into warm water, spread across four days, so the iconic challenge becomes achievable without the cold and the shipping lanes. This hub covers the history, the preparation and the warm water alternative.
The Channel crossing has defined open water endurance for 150 years. UltraSwim 33.3 keeps the 33.3km distance but changes the conditions, spreading it across four warm water days with hotels, safety cover and a preparation programme, opening the iconic challenge to far more swimmers.
About 33.3km at the shortest crossing between Dover and Cap Gris Nez. UltraSwim 33.3 is built around this exact distance.
Yes. UltraSwim 33.3 covers the full 33.3km in warm water locations, across four days, with full support.
Captain Matthew Webb in 1875, followed by Trudy Ederle as the first woman in 1926.
Yes. 33.3km is a major distance in any conditions. The format makes it achievable, but it still demands training and commitment.