Races in calendar week 21/2007
All motorsport events on the weekend of 25–27 May 2007.
| Circuit | Country | Series |
|---|---|---|
| Charlotte (oval) |  USA |
|
| Curitiba |  Brazil |
|
| Estoril |  Portugal |
|
| Indianapolis (oval) | USA |
|
| Lakeville (Lime Rock) | USA |
|
| Monte Carlo |  Monaco |
|