Practice for all races starts at 7 pm EST
| September 13 | [Legacy] Phoenix Raceway – 2008 – Lotus 79 |
| September 15 | [Legacy] Phoenix Raceway – 2008 – Lotus 49 |
| September 20 | Long Beach Street Circuit – Lotus 79 |
| September 22 | Long Beach Street Circuit – Lotus 49 |
| September 27 | Indianapolis Motor Speedway – Lotus 79 |
| September 29 | Indianapolis Motor Speedway – Lotus 49 |
| October 4 | The Milwaukee Mile – Lotus 79 |
| October 6 | The Milwaukee Mile – Lotus 49 |
| October 11 | Detroit Grand Prix at Belle Isle – Lotus 79 |
| October 13 | Detroit Grand Prix at Belle Isle – Lotus 49 |
| October 18 | Las Vegas Motor Speedway – Lotus 79 |
| October 20 | Las Vegas Motor Speedway – Lotus 49 |
| October 25 | Road America – Lotus 79 |
| October 27 | Road America – Lotus 49 |
| November 1 | [Legacy] Pocono Raceway – 2009 – Lotus 79 |
| November 3 | [Legacy] Pocono Raceway – 2009 – Lotus 49 |
| November 8 | Mid-Ohio Sports Car Course – Lotus 79 |
| November 10 | Mid-Ohio Sports Car Course – Lotus 49 |
| November 15 | World Wide Technology Raceway (Gateway) – Lotus 79 |
| November 17 | World Wide Technology Raceway (Gateway) – Lotus 49 |
| November 22 | Watkins Glen International – Lotus 79 |
| November 24 | Watkins Glen International – Lotus 49 |
| November 29 | WeatherTech Raceway at Laguna Seca – Lotus 79 |
| December 1 | WeatherTech Raceway at Laguna Seca – Lotus 49 |