Races in calendar week 42/2021
All motorsport events on the weekend of 22–24 Oct 2021.
| Circuit | Country | Series |
|---|---|---|
| Austin |  USA |
|
| Barcelona |  Spain |
|
| Hockenheim |  Germany |
|
| Kamitsue (Autopolis) |  Japan |
|
| Kansas City (oval) | USA |
|
| Mogi Guaçu (Velo Cittá) |  Brazil |
|
| Phillip Island |  Australia |
|
| Portimao (Algarve) |  Portugal |
|
| Wakefield Park | Australia |
|