Mazda
Grand Prix of St. Petersburg
Race 2
St. Petersburg Street Circuit
1.8 Mile Street Course
40 Laps/72 Miles
March 11, 2018
| Finish | Start | Driver | Car # | Sponsor/Name | Chassis | Engine | Laps | Status | Points |
| 1 | 6 | Santiago Urrutia | 5 | BSE | Dallara IL-15 | Mazda MZR-R | 40 | 0:50:02.1579 86.338 | 30 |
| 2 | 8 | Shelby Blackstock | 3 | Starstruck/Gap Guard | Dallara IL-15 | Mazda MZR-R | 40 | 0:50:13.8985 86.002 | 25 |
| 3 | 7 | Ryan Norman | 48 | Journey | Dallara IL-15 | Mazda MZR-R | 40 | 0:50:17.5878 85.896 | 22 |
| 4 | 4 | Victor Franzoni | 23 | Mazda | Dallara IL-15 | Mazda MZR-R | 40 | 0:50:20.3936 85.817 | 19 |
| 5 | 5 | Neil Alberico | 2 | Rising Star Racing/Gap Guard | Dallara IL-15 | Mazda MZR-R | 40 | 0:50:25.3489 85.676 | 17 |
| 6 | 9 | Dalton Kellett | 28 | K-Line Insulators USA | Dallara IL-15 | Mazda MZR-R | 40 | 0:50:26.1178 85.654 | 15 |
| 7 | 1 | Patricio O'Ward | 27 | CDMX Mexico City | Dallara IL-15 | Mazda MZR-R | 40 | 0:50:46.9758 85.068 | 16 |
| 8 | 2 | Colton Herta | 98 | Deltro Energy | Dallara IL-15 | Mazda MZR-R | 9 | Wrecked | 13 |
| 9 | 3 | Aaron Telitz | 9 | Rice Lake Weighing Systems | Dallara IL-15 | Mazda MZR-R | 0 | Wrecked | 12 |