List of all Portland Indycars races held in IRL championships
| Race | Winner | Track | Race Start | |
|---|---|---|---|---|
 |
2018 Portland Indycars |
Carlos Iaconelli Lola B05/52 |
Portland | 2nd September 2018 |
|
2019 Portland Indycars |
Rio Haryanto Lola B05/52 |
Portland | 1st September 2019 |
|
2021 Portland Indycars | Portland | 12th September 2021 |