The Portland International Raceway (PIR) is a motorsport track located in Portland, Oregon, United States. It is a 1.967-mile (3.166 km) road course that was built in 1960. PIR hosts a variety of racing events, including the IndyCar Series, the NASCAR Cup Series, and the SCCA World Challenge. It is also used for motorcycle racing, drifting, and kart racing. PIR is located in the Delta Park area of Portland, and it is the largest outdoor event facility in the city.