Races in calendar week 31/2018
All motorsport events on the weekend of 3–5 Aug 2018.
| Circuit | Country | Series |
|---|---|---|
| Brands Hatch |  Great Britain |
|
| Budapest |  Hungary |
|
| Eastern Creek (Sydney) |  Australia |
|
| Elkhart Lake (Road America) |  USA |
|
| Fuji |  Japan |
|
| Goiânia |  Brazil |
|
| Nürburgring |  Germany |
|
| Pittsburgh | USA |
|
| Watkins Glen | USA |
|