The Portland International Raceway in Portland, Oregon is a 1.967-mile road course that features 12 turns. The racetrack hosts the NASCAR K&N Pro Series West, ICSCC, SCCA, and OMRRA road racing. The raceway opened in 1960 and it holds a capacity of 88,000.
Since opening, the Portland International Raceway has undergone a few renovations. In the 1970s, the track was paved after it was threatened that the track would lose the Rose Cup races. Most recently, the Portland International Raceway underwent a renovation that repaved the track and made some changes to the layout between 2007 and 2008. These renovations widened turns 4 through 7, sharpened Turn 7, and installed Formula One-style curbs.
Over the years, the Portland International Raceway has hosted many other events besides car racing. The track is home to the Oregon Bicycle Racing Association bicycling races, and the raceway features a dragstrip and motocross track.