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Race results: Portland International Raceway
| Pos | Num | Driver | C/E/T | Race time/Split | Pit stops | Status | Grid pos |
| 1 | 30 | Takuma Sato | D/H/F | 2:00:09.7537 | 3 | Running | 20 |
| 2 | 28 | Ryan Hunter-Reay | D/H/F | +0.6084 | 2 | Running | 5 |
| 3 | 18 | Sebastien Bourdais | D/H/F | +1.8266 | 4 | Running | 4 |
| 4 | 21 | Spencer Pigot | D/C/F | +4.5557 | 3 | Running | 17 |
| 5 | 9 | Scott Dixon | D/H/F | +5.3215 | 4 | Running | 11 |
| 6 | 22 | Simon Pagenaud | D/C/F | +11.4605 | 4 | Running | 22 |
| 7 | 23 | Charlie Kimball | D/C/F | +12.0057 | 4 | Running | 25 |
| 8 | 27 | Alexander Rossi | D/H/F | +13.3769 | 3 | Running | 3 |
| 9 | 19 | Pietro Fittipaldi (R) | D/H/F | +18.3753 | 3 | Running | 16 |
| 10 | 1 | Josef Newgarden | D/C/F | +19.8044 | 3 | Running | 2 |
| 11 | 14 | Tony Kanaan | D/C/F | +22.1362 | 3 | Running | 24 |
| 12 | 6 | Carlos Munoz | D/H/F | +22.7069 | 3 | Running | 14 |
| 13 | 88 | Gabby Chaves | D/C/F | +23.7138 | 3 | Running | 21 |
| 14 | 4 | Matheus Leist (R) | D/C/F | +29.7958 | 3 | Running | 19 |
| 15 | 20 | Jordan King (R) | D/C/F | +32.1352 | 3 | Running | 12 |
| 16 | 60 | Jack Harvey (R) | D/H/F | +32.4191 | 3 | Running | 13 |
| 17 | 32 | Alfonso Celis Jnr (R) | D/C/F | +48.8038 | 4 | Running | 23 |
| 18 | 59 | Max Chilton | D/C/F | +55.2123 | 3 | Running | 15 |
| 19 | 26 | Zach Veach (R) | D/H/F | +1 lap | 3 | Running | 6 |
| 20 | 39 | Santino Ferrucci (R) | D/H/F | +4 lap | 3 | Running | 18 |
| 21 | 12 | Will Power | D/C/F | +7 lap | 4 | Running | 1 |
| 22 | 5 | James Hinchcliffe | D/H/F | +29 laps | 5 | Running | 7 |
| 23 | 15 | Graham Rahal | D/H/F | +101 laps | 2 | Contact | 10 |
| 24 | 10 | Ed Jones | D/H/F | +105 laps | 0 | Contact | 8 |
| 25 | 98 | Marco Andretti | D/H/F | +105 laps | 0 | Contact | 9 |
(C)hassis: D=Dallara | (E)ngine: C=Chevy, H=Honda | (T)yre: F=Firestone
