Calendar
At the annual press conference during the 2019 24 Hours of Spa on 26 July, the Stéphane Ratel Organisation announced the first draft of the 2020 calendar with Las Vegas being dropped from the schedule in favor of Indianapolis. [2] Austin was removed from the provisional calendar on 25 October, [3] before it would return on 8 November after extensive discussions with team owners and stakeholders. The round at Indianapolis became a non-points paying event. [4]
- Calendar changes due to COVID-19 pandemic
The round at Canadian Tire Motorsport Park was cancelled. The round at Virginia was moved from 6–7 June to 11–12 July. The round at Indianapolis is back to being a points paying event to replace the cancelled rounds at CTMP with the first three hours of the Indianapolis 8 Hour Intercontinental GT race counting towards the championship.
| Round | Circuit | Date | ||
|---|---|---|---|---|
| 1 |  Circuit of the Americas, Elroy, Texas | 7–8 March | ||
| 2 | Virginia International Raceway, Alton, Virginia | 11–12 July | ||
| 3 | Sonoma Raceway, Sonoma, California | 8–9 August | ||
| 4 | Road America, Elkhart Lake, Wisconsin | 29–30 August | ||
| 5 | Circuit of the Americas, Elroy, Texas | 19–20 September | ||
| 6 | Indianapolis Motor Speedway, Indianapolis, Indiana | 4 October | ||
| Cancelled due to the 2019-20 coronavirus pandemic | ||||
| Circuit | Original Date | |||
 Canadian Tire Motorsport Park, Bowmanville, Ontario | 16–17 May | |||
