Portland International Raceway (PIR) is a motorsport facility in Portland in the U.S. state of Oregon. It is part of the Delta Park complex on the former site of Vanport, just south of the Columbia River. It lies west of the Delta Park/Vanport light rail station and less than a mile west of Interstate 5.

Michael Mario Andretti is an American former racing driver, and current team owner. Statistically one of the most successful drivers in the history of American open-wheel car racing, Andretti won the 1991 CART championship, and amassed 42 race victories, the most in the CART era and fourth-most all time. Since his retirement, Andretti has owned Andretti Autosport, which has won four IndyCar Series championships and five Indianapolis 500 races. He is the son of Mario Andretti, a multi-time champion, and is the father of IndyCar Series driver Marco Andretti.