splash/mash/dash
n.— «The Ming Tomb reservoir aptly hosts the swimming section of the gruelling Olympics triathlon events.…The Olympic ‘splash/mash/dash,’ as the sport is fondly known, takes place in the Changping District of Beijing.» —“Ming Tombs to host triathlon” RTÉ Sport (Ireland) July 24, 2008. (source: Double-Tongued Dictionary)