Leonard Jansen

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Leonard Jansen
Leonard Jansen is an American open water swimmer from Elizabethtown, Pennsylvania. He has competed in the 8 Bridges Hudson River Swim in New York, 17-mile Rose Pitonof Centennial Swim in New York City, 28.5-mile Manhattan Island Marathon Swim, the 8-mile Boston Light Swim and participated in the 26-mile END-WET in North Dakota and the Cape Circumnavigation Challenge 15.1-mile marathon swim around Cape May, New Jersey organized by Jason Malick and sanctioned by the World Open Water Swimming Association.


The Extreme North Dakota Watersports Endurance Test or END-WET, is a 36-mile (57.9 km) mixed-sports event where solo and relay open water swimmers pit themselves against other endurance athletes down the Red River between North Dakota and East Grand Forks, Minnesota in the United States. It is one of the longest marathon swims in the world. The event is organized and directed by Andy Magness.

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