Home › Multimedia › World in picture › Breaking World Record, He Swam for 54 Days Across Lake Malawi. aaa Breaking World Record, He Swam for 54 Days Across Lake Malawi. About Islam 28 April, 2019 Martin Hobbs, 45, set the record for longest solo swim in a lake and became the first human to swim the entirety of Lake Malawi after swimming for 54 days in a row.