Races in calendar week 42/2005

All motorsport events on the weekend of 21–23 Oct 2005.

Circuit	Country	Series
Estoril	Portugal	Race results available (full) A1 Grand Prix 2005-2006
Hockenheim	Germany	Race results available (full) Formula 3 Euroseries 2005 Race results available (full) DTM (German Touringcar Masters) 2005
Misano	Italy	Race results available (full) Formula 3000 Italia 2005 Race results available (full) Italian Formula 3 Championship 2005 Race results available (full) Italian Superstars Championship 2005
Monza	Italy	Race results available (full) Formula Renault 3.5 World Series 2005 Race results available (full) Formula Renault 2000 Eurocup 2005
Motegi	Japan	Race results available (full) Formula Nippon 2005 Race results available (full) All-Japan Formula 3 Championship 2005
Surfers Paradise (Gold Coast)	Australia	Race results available (full) OWRS ChampCar World Series 2005 Race results available (limited) V8 Supercar Championship 2005
Zhuhai	China	Race results available (full) FIA GT Championship 2005