The greatest distance that a pedal powered boat has achieved in 24 hours by a team is 110.2 miles (177.3km) by Trieste Waterbike Team (Italy) in Trieste, Italy, on 7 May 2005

Team was Massimo Azzimonti, Mario Chersi & Stefano Venier

This can be sourced from the International Human Powered Vehicle Association (IHPVA).