Iowa Speedway
| Pos | Driver | Team/Car | Time/Gap |
| 1. | Ryan Hunter-Reay | Andretti DW12-Chevy | 1h43m39.3031s |
| 2. | Marco Andretti | Andretti DW12-Chevy | + 0.1103s |
| 3. | Tony Kanaan | KV DW12-Chevy | + 2.7245s |
| 4. | Scott Dixon | Ganassi DW12-Honda | + 3.0075s |
| 5. | Simon Pagenaud | Schmidt DW12-Honda | + 3.8468s |
| 6. | Helio Castroneves | Penske DW12-Chevy | + 5.3061s |
| 7. | Rubens Barrichello | KV DW12-Chevy | + 5.9890s |
| 8. | Ed Carpenter | Carpenter DW12-Chevy | + 6.9856s |
| 9. | Graham Rahal | Ganassi DW12-Honda | + 7.1607s |
| 10. | Justin Wilson | Coyne DW12-Honda | + 1 lap |
| 11. | Charlie Kimball | Ganassi DW12-Honda | + 2 laps |
| 12. | Takuma Sato | Rahal DW12-Honda | + 3 laps |
| 13. | James Jakes | Coyne DW12-Honda | + 5 laps |
| 14. | Simona de Silvestro | HVM DW12-Lotus | + 6 laps |
| DNF | Katherine Legge | Dragon DW12-Chevy | 243 laps |
| DNF | Alex Tagliani | Herta DW12-Honda | 207 laps |
| DNF | James Hinchcliffe | Andretti DW12-Chevy | 195 laps |
| DNF | Ryan Briscoe | Penske DW12-Chevy | 178 laps |
| DNF | Josef Newgarden | Fisher DW12-Honda | 178 laps |
| DNF | Mike Conway | Foyt DW12-Honda | 123 laps |
| DNF | Oriol Servia | Panther/DRR DW12-Chevy | 98 laps |
| DNF | JR Hildebrand | Panther DW12-Chevy | 95 laps |
| DNF | Will Power | Penske DW12-Chevy | 67 laps |
| DNF | EJ Viso | KV DW12-Chevy | 67 laps |
| DNF | Dario Franchitti | Ganassi DW12-Honda | 0 laps |