Races in calendar week 43/2021
All motorsport events on the weekend of 29–31 Oct 2021.
| Circuit | Country | Series |
|---|---|---|
| Eastern Creek (Sydney) |  Australia |
|
| Manama |  Bahrain |
|
| Martinsville (oval) |  USA |
|
| Mexico City |  Mexico |
|
| Monza |  Italy |
|
| Suzuka |  Japan |
|