Portland International Raceway
1.915 Mile Road Course (1984-87)
1.922 Mile Road Course (1988-92)
1.95 Mile Road Course (1993-2005)
Remeasured to 1.969 Miles in 1997
1.964 Mile Road Course (2006-07, 18-24)
Portland, Oregon
CART sanctioned 1984-2003
CCWS sanctioned 2004-07
INDYCAR sanctioned 2018-24
**Race cancelled due to safety concerns over coronavirus