Practice for all races starts at 7 pm EST.
Lotus 79
| Date | Track |
|---|---|
| 21-Mar | Phoenix [legacy] |
| 28-Mar | Long Beach |
| 4-Apr | Indianapolis |
| 11-Apr | Milwaukee |
| 18-Apr | Detroit |
| 25-Apr | Motegi oval |
| 2-May | Road America |
| 9-May | Portland |
| 16-May | Mid Ohio |
| 23-May | Pocono [legacy] |
| 30-May | Watkins Glen |
| 6-Jun | Laguna Seca |
Lotus 49
| Date | Track |
|---|---|
| 23-Mar | Phoenix |
| 30-Mar | Long Beach |
| 6-Apr | Indianapolis |
| 13-Apr | Milwaukee |
| 27-Apr | Charlotte |
| 4-May | Road America |
| 11-May | Pocono |
| 18-May | Mid Ohio |
| 25-May | Mosport |
| 1-Jun | Michigan |
| 9-Jun | Watkins Glen |