Portland International Raceway (PIR) is the home of the BITNILE.COM Grand Prix of Portland presented by askROI. PIR is a 1.964-mile, 12-turn permanent road course owned by the City of Portland and operated under Portland Parks & Recreation. Opened in 1960 to host sports car and drag racing, the 268-acre property hosts over 550 events annually including automotive and motorcycle road racing, motocross, cruise-ins and other special events including the Rose Cup Races. PIR has been the site of many memorable INDYCAR races. Al Unser Jr. won the inaugural Portland race in 1984, and the NTT INDYCAR SERIES returned in 2018 after an 11-year absence with 2017 and 2020 Indianapolis 500 winner Takuma Sato taking the checkered flag. The Father’s Day race of 1986 featured Mario Andretti passing his son Michael on the last lap and winning by 0.070 of a second. The closest three-way road racing finish in INDYCAR SERIES history took place at PIR in 1997 when the top three were covered by just 0.055 of a second. In 2023, Alex Palou clinched the 2023 NTT INDYCAR SERIES championship with a win in Portland.