The Racer is a wooden racing roller coaster located at Kennywood amusement park near Pittsburgh in West Mifflin, Pennsylvania. Built by Charlie Mach and designed by the legendary John A. Miller, the Racer opened to the public in 1927 and is one of the oldest operating roller coasters in the world. It features a Möbius loop layout, in which both of its trains travel along one continuous track. Each train returns to the opposite side of the station from which it began.