Port Royal Speedway is a half mile dirt racetrack in Port Royal, Juniata County, Pennsylvania in the United States. It was opened on September 10, 1938. Like all of the tracks in the United States, it closed during the World War II years (1941–1945) and re-opened in 1946. Port Royal Speedway hosts a weekly schedule of local Sprint Car, Late Model, and Pro-Stock dirt track racing. Several national touring series organizations visit the track during the racing season, including the World of Outlaws Late Model Series and the All Star Circuit of Champions. Port Royal Speedway is the host of the Juniata County Fair.