The Idemitsu Mazda MX-5 Cup presented by BF Goodrich is a single-make motor racing championship sanctioned by the International Motor Sports Association (IMSA) in the United States. Mazda MX-5 Cup is the professional Spec Miata series of Mazda Motorsports, promoted by . The pro Spec Miata series has its roots in 2003, but a unified national championship was launched in 2006.