|Location||Portland, Oregon, U.S.|
|Major events||NASCAR Craftsman Truck Series
NASCAR Winston West Series
World of Outlaws
|Surface||Clay (1924-1946; 2000-2001)
|Length||5/8 mi (1 km)|
The track began as a five-eighths-mile (one km) clay oval in 1924 on the site of a field in north Portland. The track hosted big cars, midget cars, and stock cars before the suspension of racing during World War II.
The track was paved in 1946 as a half-mile oval. NASCAR sanctioning came to Portland after Western Speedways, Inc. leased the track in 1984. Four NASCAR Craftsman Truck Series races from 1995 to 1998. Mike Skinner and Ron Hornaday, Jr. won at Portland during their championship seasons, 1995 and 1996 respectively. Rich Bickle and Stacy Compton won the final two events there.
The NASCAR Winston West Series ran 36 Portland races between 1971 and 2000 with Hershel McGriff winning a series high five times. Other notable winners included future NASCAR Winston Cup champion Bobby Allison, 1990 Daytona 500 winner Derrike Cope, and NASCAR drivers Chad Little, Greg Biffle, and Ken Schrader. 1994 Portland winner Rick Carelli competed in all four Portland Craftsman Truck Series races, with three top tens and a best finish of third in 1998.
- White, Will. "Portland Speedway". Retrieved 16 November 2010.
- Boodman, Alan. "Race Results at Portland Speedway — Racing-Reference.info". Retrieved 16 November 2010.
- Boodman, Alan. "Rick Carelli's NASCAR Camping World Truck Series Results at Portland Speedway — Racing-Reference.info". Racing-Reference.info. Retrieved 16 November 2010.
- Harms, Phil. "2000 Pennzoil World Of Outlaws Sprint Car Series" (PDF). Motorsport.com. Retrieved 16 November 2010.
- Harms, Phil. "2001 Pennzoil World Of Outlaws Sprint Car Series" (PDF). Motorsport.com. Retrieved 16 November 2010.