Races in calendar week 37/2008
All motorsport events on the weekend of 12–14 Sep 2008.
| Circuit | Country | Series |
|---|---|---|
| Brno |  Czechia |
|
| Londrina |  Brazil |
|
| Loudon (oval) |  USA |
|
| Millville | USA |
|
| Misano |  Italy |
|
| Monza | Italy |
|
| Motegi |  Japan |
|
| Phillip Island |  Australia |
|
| Silverstone |  Great Britain |
|