High Quality Content by WIKIPEDIA articles! The Pan Pacific Swimming Championships is a long course swimming event first held in 1985. The meet was initially staged biennially (every odd year), to allow for an international championship-level meet in the non-Olympic and non-World Championships years. However, beginning with the 2002 championships (and the changing of the World Championships from every four years (even year between Olympics) to every two years (every odd year), the meet is a quadrennial event, held in the even year between Summer Olympics.