2015 Season
| 25-Jan | Daytona |
| 21-Mar | Sebring |
| 3-May | Laguna Seca |
| 30-May | Detroit |
| 28-Jun | Watkins Glen |
| 12-Jul | Mosport |
| 25-Jul | Lime Rock |
| 9-Aug | Road America |
| 19-Sep | COTA |
| 3-Oct | Road Atlanta |
Championship Standings
| Jonathan Bennett | 318 |
| Colin Braun | 318 |
| Mike Guasch | 313 |
| Tom Kimber-Smith | 313 |
| Chris Cumming | 301 |
| Bruno Junqueira | 301 |
| Mikhail Goikhberg | 285 |
| Renger van der Zande | 268 |
| James French | 233 |
| Mirco Schultis | 206 |
| Conor Daly | 170 |
| Andrew Palmer | 141 |
| Mike Hedlund | 127 |
| Matt McMurry | 116 |
| Alex Popow | 115 |
Race Winners
| Mike Guasch | 4 |
| Tom Kimber-Smith | 4 |
| Andrew Palmer | 3 |
| Jonathan Bennett | 2 |
| Colin Braun | 2 |
| Chris Cumming | 2 |
| Bruno Junqueira | 2 |
| Renger van der Zande | 2 |
| Mike Hedlund | 1 |
| Andrew Novich | 1 |
| Alex Popow | 1 |
| Mirco Schultis | 1 |
Pole Positions
| James French | 3 |
| Chris Cumming | 2 |
| Tom Kimber-Smith | 1 |
| Johnny Mowlem | 1 |
| Martin Plowman | 1 |
| Stephen Simpson | 1 |
