Phoenix International Raceway, also known as PIR, is a one-mile, low-banked tri-oval race track located in Avondale, Arizona opened in 1964. PIR has an estimated grandstand seating capacity of around 67,000. Lights were installed around the track in 2004. One of the signature features of PIR is the "dogleg" at the exit of Turn 2, which leads into a sharper turning radius into Turns 3 and 4. A.J. Foyt won the track's first oval race, a 100-mile USAC event at an average speed of 107.536 mph.