Speedway Motorsports, Inc. (
SMI) is an
American corporation that owns and manages racing facilities that host
NASCAR,
IndyCar Series,
NHRA,
World of Outlaws and other motor racing series. The company's headquarters are located at
Charlotte Motor Speedway, in the suburbs of
Charlotte, NC. SMI owns nine racing facilities with a combined seating capacity of approximately 885,000. In addition to operating racetracks, SMI owns
PRN, U.S. Legends Cars International, and co-owns Motorsports Authentics.