Phoenix International Raceway, also known as PIR, is a one-mile, low-banked tri-oval race track located in Avondale, Arizona. The track opened in 1964 and currently hosts two NASCAR race weekends annually. PIR has also hosted the Indycar Series, CART, USAC and the Rolex Sports Car Series. The raceway is currently owned and operated by International Speedway Corporation. - Source: Wikipedia
