Races in calendar week 28/2021
All motorsport events on the weekend of 16–18 Jul 2021.
| Circuit | Country | Series |
|---|---|---|
| Brainerd |  USA |
|
| Lakeville (Lime Rock) | USA |
|
| Loudon (oval) | USA |
|
| Monza |  Italy |
|
| Motegi |  Japan |
|
| Parana |  Argentina |
|
| Silverstone |  Great Britain |
|
| Townsville |  Australia |
|
| Winton Raceway | Australia |
|