2020 | Entry Lists
| Circuit Names / Country | Date | List |
|---|---|---|
| Circuit of the Americas / United States of America | 6 - 8 March 2020 | View List |
| VIRginia International Raceway / United States of America | 6 - 7 June 2020 | Not available |
| Sonoma Raceway / United States of America | 7 - 9 August 2020 | Not available |
| Road America / United States of America | 28 - 30 August 2020 | Not available |
| Watkins Glen / United States of America | 18 - 20 September 2020 | Not available |
| Indianapolis Motor Speedway / United States of America | 1 - 3 October 2020 | Not available |