2006 Season
| 9-Apr | Long Beach |
| 13-May | Houston |
| 21-May | Monterrey |
| 18-Jun | Portland |
| 25-Jun | Cleveland |
| 9-Jul | Toronto |
| 23-Jul | Edmonton |
| 30-Jul | San Jose |
| 13-Aug | Denver |
| 27-Aug | Montreal |
| 24-Sep | Road America |
Standings
| Simon Pagenaud | 258 |
| Graham Rahal | 242 |
| Andreas Wirth | 227 |
| Raphael Matos | 205 |
| David Martinez | 179 |
| Jonathan Bomarito | 178 |
| Danilo Dirani | 178 |
| Alan Sciuto | 167 |
| Leonardo Maia | 161 |
| James Hinchcliffe | 160 |
| Robbie Pecorari | 147 |
| Joe d’Agostino | 123 |
| Ryan Lewis | 110 |
| Alex Barron | 96 |
| Richard Phillipe | 86 |
Race Winners
| Graham Rahal | 5 |
| Andreas Wirth | 2 |
| Jonathan Bomarito | 1 |
| James Hinchcliffe | 1 |
| Raphael Matos | 1 |
| Simon Pagenaud | 1 |
| Robbie Pecorari | 1 |
Pole Positions
| Raphael Matos | 4 |
| Graham Rahal | 4 |
| Andreas Wirth | 2 |
| James Hinchcliffe | 1 |
| Simon Pagenaud | 1 |
