Results: Gateway Motorsports Park
| Pos | Driver | Grid | C/A/E/T | Laps | Race time, gap | Laps led | Status | Pit stops |
| 1 | Josef Newgarden | 2 | D/C/C/F | 248 | 2:13:22.0358 | 170 | Running | 4 |
| 2 | Scott Dixon | 7 | D/H/H/F | 248 | +0.6850 | – | Running | 4 |
| 3 | Simon Pagenaud | 4 | D/C/C/F | 248 | +0.9743 | 13 | Running | 4 |
| 4 | Helio Castroneves | 3 | D/C/C/F | 248 | +1.5668 | 52 | Running | 4 |
| 5 | Conor Daly | 11 | D/C/C/F | 248 | +1.7446 | – | Running | 5 |
| 6 | Alexander Rossi | 9 | D/H/H/F | 248 | +2.9101 | – | Running | 4 |
| 7 | Charlie Kimball | 18 | D/H/H/F | 248 | +4.2365 | – | Running | 4 |
| 8 | James Hinchcliffe | 10 | D/H/H/F | 248 | +4.8498 | – | Running | 4 |
| 9 | Carlos Muñoz | 8 | D/C/C/F | 248 | +7.8832 | – | Running | 5 |
| 10 | Sebastien Bourdais | 19 | D/H/H/F | 248 | +8.1831 | 5 | Running | 6 |
| 11 | Sebastian Saavedra | 21 | D/H/H/F | 248 | +8.6604 | – | Running | 5 |
| 12 | Graham Rahal | 13 | D/H/H/F | 248 | +8.8457 | – | Running | 4 |
| 13 | Ed Jones (R) | 12 | D/H/H/F | 248 | +12.3444 | – | Running | 4 |
| 14 | Marco Andretti | 20 | D/H/H/F | 248 | +19.8702 | – | Running | 7 |
| 15 | Ryan Hunter-Reay | 14 | D/H/H/F | 205 | +43 laps | – | Contact | 4 |
| 16 | Tony Kanaan | 17 | D/H/H/F | 168 | +80 laps | – | Mechanical | 5 |
| 17 | Max Chilton | 16 | D/H/H/F | 164 | +84 laps | 3 | Contact | 4 |
| 18 | JR Hildebrand | 15 | D/C/C/F | 100 | +148 laps | – | Contact | 1 |
| 19 | Takuma Sato | 6 | D/H/H/F | 6 | +242 laps | – | Contact | 0 |
| 20 | Will Power | 1 | D/C/C/F | 5 | +243 laps | 5 | Contact | 0 |
| 21 | Ed Carpenter | 5 | D/C/C/F | 5 | +243 laps | – | Contact | 0 |
(C)hassis: D=Dallara | (A)erokit: C=Chevy, H=Honda | (E)ngine: C=Chevy, H=Honda | (T)yre: F=Firestone
