A motorcycle having a crankcase supporting a crankshaft of an engine, a driving force transmission device at an intermediate position between the crankshaft and a driving wheel to transmit rotational force from the crankshaft, and a swing arm that swingably supports the driving wheel, wherein the driving force transmission device includes a continuously variable transmission provided with an endless flexible member stretched between a drive pulley and a driven pulley, and a continuously variable transmission case covering the continuously variable transmission, and wherein the swing arm includes a pivot portion provided on one end side of the swing arm to be swingably attached to a vehicle body frame or the crankcase, and a driving wheel support portion provided on another end side of the swing arm to rotatably support the driving wheel.