| 1 | Sebring | 3/17/06 | Sebring International Raceway | 9 | 5 |
| 2 | Houston | 5/13/06 | Reliant Park (JAGflo Speedway), Houston | 19 | 4 |
| 3 | Mid-Ohio | 5/20/06 | Mid-Ohio Sports Car Course | 4 | 5 |
| 4 | Milwaukee | 6/3/06 | The Milwaukee Mile | 3 | 1 |
| 5 | Montreal | 6/24/06 | Circuit Gilles-Villeneuve | 3 | 3 |
| 6 | Miller Motorsports Park | 7/15/06 | Miller Motorsports Park | 2 | 29R |
| 7 | Portland | 7/22/06 | Portland International Raceway | 2 | 1 |
| 8 | Grand Prix du Trois-Rivieres | 8/6/06 | Circuit Trois-Rivieres | 6 | 2 |
| 9 | Road America | 8/19/06 | Road America | 8 | 36R |
| 10 | Mosport | 9/2/06 | Canadian Tire Motorsport Park | 5 | 3 |
| 11 | Road Atlanta | 9/29/06 | Road Atlanta | 7 | 32R |
| 12 | Mazda Raceway Laguna Seca | 10/21/06 | Laguna Seca Raceway | 7 | 2 |