Portland International Raceway is located in Portland's Delta Park complex, just south of the Columbia River and less than a mile west of Interstate 5.
The track hosts a Champcar race every year and ICSCC and SCCA road racing events. The facility includes a drag strip and a motocross track.
The road course is almost perfectly flat and runs clockwise. Two track configurations are possible. One includes a hard chicane at the end of the front straight and involves twelve turns at length of 1.967 miles. Without the chicane, the track has nine turns an a lap length of 1.915 miles.
Portland International Raceway Official Site (http://www.portlandraceway.com/)