pentathlete

1. (athletics) An athlete who competes in the pentathlon.Examples: "In Tokyo, that led to accusations of abuse after a German pentathlete and medal contender, Annika Schleu, was assigned a stubborn horse that refused to jump at all."; "While the pentathletes at the Paris Games are indeed riding horses over a series of jumps as part of the event, they will face an entirely different fifth discipline when they get to Los Angeles in 2028: a race the organizers are calling a “‘Ninja Warrior’-style obstacle course.”"