Triathlon is a multiple-stage competition involving the completion of three continuous and sequential endurance disciplines. Triathlon involves swimming, cycling, and running in immediate succession over various distances. Triathletes compete for fastest overall course completion time, including timed "transitions" between the individual swim, cycle, and run components. The purposes of this course include coaching students to build up their physical fitness, and improve swim, cycling and running skill. Training schedule and diary will be included in the class. At final stage, students have to finish a triathlon competition at least.