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Race results: Portland
| Pos | Num | Driver | C/E/T | Race time/Split | Pit stops | Status | Grid pos |
| 1 | 12 | Will Power | D/C/F | 1:58:43.0036 | 2 | Running | 2 |
| 2 | 10 | Felix Rosenqvist (R) | D/H/F | +2.7885 | 2 | Running | 5 |
| 3 | 27 | Alexander Rossi | D/H/F | +4.5839 | 2 | Running | 7 |
| 4 | 88 | Colton Herta (R) | D/H/F | +5.2280 | 2 | Running | 1 |
| 5 | 2 | Josef Newgarden | D/C/F | +5.8539 | 2 | Running | 13 |
| 6 | 21 | Spencer Pigot | D/C/F | +6.7477 | 3 | Running | 10 |
| 7 | 22 | Simon Pagenaud | D/C/F | +7.9418 | 2 | Running | 18 |
| 8 | 4 | Matheus Leist | D/C/F | +8.1898 | 4 | Running | 21 |
| 9 | 18 | Sebastien Bourdais | D/H/F | +9.5957 | 3 | Running | 12 |
| 10 | 23 | Charlie Kimball | D/C/F | +10.1665 | 2 | Running | 22 |
| 11 | 59 | Max Chilton | D/C/F | +1 lap | 4 | Running | 20 |
| 12 | 14 | Tony Kanaan | D/C/F | +1 lap | 4 | Running | 19 |
| 13 | 98 | Marco Andretti | D/H/F | +1 lap | 5 | Running | 16 |
| 14 | 20 | Ed Jones | D/C/F | +1 lap | 5 | Running | 23 |
| 15 | 30 | Takuma Sato | D/H/F | +2 laps | 6 | Running | 17 |
| 16 | 9 | Scott Dixon | D/H/F | +3 laps | 4 | Running | 3 |
| 17 | 19 | Santino Ferrucci (R) | D/H/F | +9 laps | 4 | Mechanical | 14 |
| 18 | 28 | Ryan Hunter-Reay | D/H/F | +24 laps | 4 | Contact | 6 |
| 19 | 60 | Jack Harvey | D/H/F | +92 laps | 0 | Contact | 4 |
| 20 | 5 | James Hinchcliffe | D/H/F | +105 laps | 0 | Contact | 8 |
| 21 | 7 | Conor Daly | D/H/F | +105 laps | 0 | Contact | 9 |
| 22 | 26 | Zach Veach | D/H/F | +105 laps | 0 | Contact | 11 |
| 23 | 15 | Graham Rahal | D/H/F | +105 laps | 0 | Contact | 15 |
Race winner: 105 laps
(C)hassis: D=Dallara | (E)ngine: C=Chevy, H=Honda | (T)yre: F=Firestone
