The track played an important role during the heyday of professional sports car racing in the U.S. during the 1960s. From 1963 through 1968, Pacific Raceways hosted the Pacific Northwest Grand Prix, which was a round of the United States Road Racing Championship. From 1967 through 1970, the venue hosted an annual round of the SCCA Trans-Am Series, including the season finales in 1967 and 1968. The Trans-Am Series returned to the track in 1975, 1977, and 1982 through 1984. The SCCA Continental Championship for Formula 5000 cars visited the track from 1969 through 1971, and again in 1973.
