Races in calendar week 38/2011
All motorsport events on the weekend of 23–25 Sep 2011.
| Circuit | Country | Series |
|---|---|---|
| Donington Park |  Great Britain |
|
| Estoril |  Portugal |
|
| Loudon (oval) |  USA |
|
| Mugello |  Italy |
|
| Parana |  Argentina |
|
| Singapore |  Singapore |
|
| Sugo |  Japan |
|