Practice for all races starts at 7 pm EST.
Lotus 79
| Date | Track | Laps |
|---|---|---|
| 06/20/25 | Phoenix [legacy] | 80 |
| 06/27/25 | Long Beach | 35 |
| 07/04/25 | Indepence Day | no race |
| 07/11/25 | Indianapolis | 100 |
| 07/18/25 | Milwaukee | 80 |
| 07/25/25 | Detroit | 35 |
| 08/01/25 | Motegi Oval | 50 |
| 08/08/25 | Road America | 25 |
| 08/15/25 | Portland | 45 |
| 08/22/25 | Mid Ohio | 35 |
| 08/29/25 | Pocono [legacy] | 50 |
| 09/05/25 | Laguna Seca | 35 |
Lotus 49
| Date | Track | Laps |
|---|---|---|
| 06/22/25 | Phoenix | 60 |
| 06/29/25 | Long Beach | 25 |
| 07/06/25 | Indianapolis | 100 |
| 07/13/25 | Milwaukee | 60 |
| 07/20/25 | Charlotte | 60 |
| 07/27/25 | Road America | 20 |
| 08/03/25 | Pocono | 50 |
| 08/10/25 | Mid Ohio | 25 |
| 08/17/25 | Portland | 30 |
| 08/24/25 | Mosport | 25 |
| 08/31/25 | Michigan | 60 |
| 09/07/25 | Watkins Glen | 20 |