Past O’Reilly Auto Parts Series race winners at Portland International Speedway
| Date | Winner | Start | Make/Model | Pole | Cautions | Laps | Avg. Speed | LC |
|---|
| 06-04-2022 | A.J. Allmendinger | 10 | Chevrolet | 93.229 | 9 | 26 | 48.883 | 8 |
| 06-03-2023 | Cole Custer | 2 | Ford | 95.694 | 5 | 10 | 65.126 | 5 |
| 06-1-2024 | Shane Van Gisbergen | 2 | Chevrolet | 96.654 | 4 | 14 | 69.575 | 9 |
| 08-30-2025 | Connor Zilisch | 1 | Chevrolet | 96.648 | 4 | 14 | 66.668 | 2 |
