Cooper Tires Indy Lights Grand Prix of Portland Race 1
Portland International Raceway
1.964 Mile Road Course
35 Laps/68.74 Miles
September 1, 2018
| Finish | Start | Driver | Car # | Sponsor/Name | Chassis | Engine | Laps | Status | Points |
| 1 | 1 | Patricio O'Ward | 27 | Riverina CDMX Mexico City | Dallara IL-15 | Mazda MZR-R | 35 | 0:37:38.2454 109.582 | 32 |
| 2 | 2 | Colton Herta | 98 | Deltro Energy | Dallara IL-15 | Mazda MZR-R | 35 | 0:37:39.9321 109.501 | 25 |
| 3 | 4 | Victor Franzoni | 23 | Mazda | Dallara IL-15 | Mazda MZR-R | 35 | 0:37:50.3399 108.999 | 22 |
| 4 | 5 | Santiago Urrutia | 5 | BSE | Dallara IL-15 | Mazda MZR-R | 35 | 0:37:53.2121 108.861 | 19 |
| 5 | 6 | Ryan Norman | 48 | Journey | Dallara IL-15 | Mazda MZR-R | 35 | 0:37:55.4426 108.754 | 17 |
| 6 | 3 | Aaron Telitz | 9 | Rice Lake Weighing Systems | Dallara IL-15 | Mazda MZR-R | 35 | 0:38:03.1561 108.387 | 15 |
| 7 | 7 | Dalton Kellett | 28 | K-Line Insulators USA | Dallara IL-15 | Mazda MZR-R | 35 | 0:38:03.7031 108.361 | 14 |
| 8 | 8 | Heamin Choi | 7 | Wongdon | Dallara IL-15 | Mazda MZR-R | 30 | Flagged | 13 |