Portland circuit in IRL. Full information
All years in which the races was held at the Portland circuit
Portland track configuration from 2018 to 2021
| Year | Winner | Grand Prix | Race Start |
|---|---|---|---|
| 2018 |
 Rahal-Letterman-Lanigan Racing DW12 Takuma Sato |
Portland Indycars | 2nd September 2018 |
| 2019 |
 Team Penske DW12 Will Power |
Portland Indycars | 1st September 2019 |
| 2021 |
Chip Ganassi Racing Team DW12 Alex Palou |
Portland Indycars | 19:00, 12th September 2021 |
List of all riders who have won the Portland circuit
| Name | Wins | Poles | Points |
|---|---|---|---|
| Takuma Sato | 1 | 0 | 84 |
| Will Power | 1 | 1 | 81 |
| Alex Palou | 1 | 1 | 52 |
List of winning teams on the Portland Circuit
| Name | Wins | Poles | Points |
|---|---|---|---|
| Team Penske | 1 | 1 | 248 |
| Chip Ganassi Racing Team | 1 | 1 | 217 |
| Rahal-Letterman-Lanigan Racing | 1 | 0 | 127 |