Royal Purple Synthetic Oil
Grand Prix of Indianapolis Race 2
Indianapolis Motor Speedway
2.439 Mile Road Course
35 Laps/85.365 Miles
May 12, 2018
| Finish | Start | Driver | Car # | Sponsor/Name | Chassis | Engine | Laps | Status | Points |
| 1 | 2 | Colton Herta | 98 | Deltro Energy | Dallara IL-15 | Mazda MZR-R | 35 | 0:45:28.9254 112.614 | 30 |
| 2 | 4 | Aaron Telitz | 9 | Rice Lake Weighing Systems | Dallara IL-15 | Mazda MZR-R | 35 | 0:45:33.1222 112.441 | 25 |
| 3 | 6 | Victor Franzoni | 23 | Mazda | Dallara IL-15 | Mazda MZR-R | 35 | 0:45:33.7766 112.414 | 22 |
| 4 | 3 | Santiago Urrutia | 5 | BSE | Dallara IL-15 | Mazda MZR-R | 35 | 0:45:48.6335 111.806 | 20 |
| 5 | 5 | Ryan Norman | 48 | Journey | Dallara IL-15 | Mazda MZR-R | 35 | 0:45:49.1902 111.783 | 17 |
| 6 | 7 | Dalton Kellett | 28 | K-Line Insulators USA | Dallara IL-15 | Mazda MZR-R | 35 | 0:45:50.2967 111.738 | 15 |
| 7 | 1 | Patricio O'Ward | 27 | Riverina CDMX Mexico City | Dallara IL-15 | Mazda MZR-R | 34 | Flagged | 15 |