Portland International Raceway
1.969 Mile Road Course (1999-2001, 04-05)
1.964 Mile Road Course (2006-08, 18-20, 22-24)
Portland, Oregon
IMSA sanctioned 1999-2001, 04-08
INDYCAR sanctioned 2018-20
USAC sanctioned 2022-24
| Race # | Date | Miles | Winner |
| 1 | 7/31/1999 | 57.101 | Joey Hand |
| 2 | 9/10/2000 | 63.008 | Alex Figge |
| 3 | 8/4/2001 | 59.07 | Marc De Vellis |
| 4 | 7/24/2004 | 61.039 | Mike Potekhen |
| 5 | 7/30/2005 | 55.132 | Graham Rahal |
| 6 | 7/23/2006 | 56.956 | Mike Potekhen |
| 7 | 6/9/2007 | 49.1 | Devin Cunningham |
| 8 | 7/26/2008 | 66.776 | Tom Gladdis |
| 9 | 7/27/2008 | 70.704 | John Edwards |
| 10 | 9/1/2018 | 58.92 | Oliver Askew |
| 11 | 9/2/2018 | 58.92 | David Malukas |
| 12 | 8/31/2019 | 58.92 | Kyle Kirkwood |
| 13 | 9/1/2019 | 58.92 | Kyle Kirkwood |
| ** | 9/12/2020 | ** | ** |
| ** | 9/13/2020 | ** | ** |
| 14 | 9/2/2022 | 58.92 | Louis Foster |
| 15 | 9/2/2022 | 43.208 | Reece Gold |
| 16 | 9/3/2022 | 58.92 | Reece Gold |
| 17 | 9/1/2023 | 58.92 | Kiko Porto |
| 18 | 9/2/2023 | 58.92 | Michael d'Orlando |
| 19 | 9/3/2023 | 58.92 | Nikita Johnson |
| 20 | 8/23/2024 | 53.028 | Nikita Johnson |
| 21 | 8/24/2024 | 58.92 | Nikita Johnson |
**Race cancelled due to safety concerns over coronavirus