To provide a board for sport possible to control a board traveling direction by operating a load to be applied to pedals and possible to control the board in response to a water flow of a river or the like.

This sport board is formed by rotatably fitting movable fins 12a and 12b to a rear part of a board main body 10. The top surface of the board main body 10 is provided with pedals 14a and 14b to be moved in the vertical direction, and the movable fins 12a and 12b are provided to be usually returned to an upper position. An operating mechanism is provided to apply a load to the pedals 14a and 14b to lower the pedals 14a and 14b and to move the movable fins 12a and 12b to a lower position, in which the movable fins 12a and 12b receive the flow, with the lowering operation of the pedals 14a and 14b.