Matthias Kaßner

Matthias Kaßner from Germany

Ned Denison hosts an annual Triple Crowner dinner at the end of the Cork Distance Week in Cork, Ireland. On 12 July 2024, Fergal Madden, Paula Yankauskas, Carol Cashell, Gábor Molnár, Milko van Gool, Anita Hartsock, Loren King (first row, left to right) Gina Harden, Liz Fry, Courtney Moates Paulk, Martha Wood, Susan McKay, Laura Lopez Bonilla, Carol Wortman, Matthias Kaßner (second row, left to right) Helen Beveridge, Stephanie Hopson , Rosie Foley, Heather Roka, Kerry Yonushonis, Ned Denison, Bill Shipp, Fionnuala Walsh, Jenny Smith, Simon Olliver, Steve Sutton (third row, left to right) attended

Matthias Kaßner after his fifth Oceans Seven channel across the Tsugaru Channel in northern Japan on 20 August 2019

Matthias Kaßner (or Matthias Kassner) is a 56-year-old German open water swimmer from Berlin.

Open Water Swimming Highlights

He achieved the Triple Crown of Open Water Swimming in 2015.
He achieved the Frosted Triple Crown of Open Water Swimming on 27 January 2017.
He has completed five Oceans Seven channels to date.
He serves as a Marathon Swimming Mentor.
He finished 8th in the Hallstättersee Ice Swimming Ice Kilometer at the age of 54 on 5 March 2022.
On 28 August 2020, he completed an unprecedented 30 km swim around Berlin, Germany, the Berlin Köpenick Marathon Swim in 13 hours 7 minutes at the age of 52, starting and finishing on a small beach in a village called Schmöckwitz.
He completed a 16.3 km crossing of Lake Windermere in England in 6 hours 0 minutes.
He completed the 14 km Wakenitz Man in 4 hours 20 minutes, 4 hours 22 minutes and 4 hours 24 minutes
He completed 32 km at the Münster Day & Night in 24 hours 0 minutes
He completed two Ice Kilometer swims in 17:87 and 18:19.
In 2009, he completed a 2-person 26.4 km relay of Lake Zürich in Switzerland in 10 hours 14 minutes.
In 2014, he completed a 4-person 33.8 km relay crossing of the English Channel in 14 hours 35 minutes.
On 5 August 2015, he completed the 26.4 km International Self-Transcendence Marathon Swim in Switzerland in 10 hours 27 minutes 22 seconds at the age of 44.
On 6 June 2010, he crossed the 14.4 km Strait of Gibraltar from Spain to Morocco in 4 hours 18 minutes at the age of 42.
In 2011, he completed a crossing of Lake Windermere in 6 hours 1 minutes.
In 2012, he completed a 26.4 km crossing of Lake Zurich in Switzerland in 10 hours 27 minutes.
On 29 August 2013, he crossed the 33.5 km English Channel from England to France in 14 hours 43 minutes at the age of 45 with the Channel Swimming & Piloting Federation.
On 28 June 2014, he completed the 45.9 km (28.5-mile) Manhattan Island Marathon Swim in 10 hours 4 minutes 11 seconds at the age of 46.
On 16 July 2014, he completed the 19 km Beltquerung (Fehmarnbelt Solo Swim from Germany to Denmark) in 7 hours 27 minutes at the age of 46.
On 20 August 2015, he crossed the 32.3 km Catalina Channel from Santa Catalina Island to the Southern California mainland in 13 hours 59 minutes 31 seconds at the age of 47.
On 8 August 2016, he completed the 32.4 km Bodenseequerung in 13 hours 38 minutes at the age of 48.
On 30 August 2017, he crossed the 35 km North Channel from Northern Ireland to Scotland in 14 hours 24 minutes 40 seconds at the age of 49.
He finished 19th in the 1 km ice kilometer at the 2018 Ice Swimming Aqua Sphere German Open in Wöhrsee, Burghausen, Germany on 5 January 2018 in 17:56.4.
He finished 23rd in the 200m freestyle at the 2018 Ice Swimming Aqua Sphere German Open in Wöhrsee, Burghausen, Germany on 6 January 2018.
He finished 14th in the 500m freestyle at the 2018 Ice Swimming Aqua Sphere German Open in Wöhrsee, Burghausen, Germany on 7 January 2018.
On 18 August 2018, he aborted a 19.5 km crossing of the Tsugaru Channel from Honshu to Hokkaido in northern Japan after 3.5 hours of swimming because he was not feeling well.
On 27 January 2017, he completed an Ice Mile in Zwembad De Waterdam Edam in 4.27°C water and 4.00°C air in 30:14 in an unheated open air swimming pool to complete the Frosted Triple Crown of Open Water Swimming.
On 19 January 2018, he completed an Ice Mile in Volendam, Netherlands in 3.93°C water and 4.90°C air in 29:12 in an unheated open air swimming pool.
He completed the Frosted Triple Crown of Open Water Swimming on 27 January 2017.
He competed in the Ice Kilometer at the 3rd International Ice Swimming Association World Championship held in Murmansk, Russia in March 2019.
On 20 August 2019, he completed a 19.5 km crossing of the Tsugaru Channel from Honshu to Hokkaido in northern Japan in 9 hours 45 minutes.
He finished 7th in the Ice Kilometer at the Ice Swimming Volendam event on 18-19 January 2020 in zwembad De Waterdam Edam/Volendam, Netherlands at the age of 53.
On 27 August 2024, he completed the In Search of Memphre in 19 hours 47 minutes under the guidance of Gary Coburn, Vera Rivard, Ina Kaßner, and Paula Yankauskas at the age of 56.

Marathon Swim Stories

He appeared with Shannon House Keegan on Marathon Swim Stories.

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