2004 calendar expanded to 18 events:
FIA provisional F1 calendar 2004
March 7 Australian Grand Prix Melbourne
March 21 Malaysian Grand Prix Sepang
April 4 Bahrain Grand Prix Bahrain
April 25 San Marino Grand Prix Imola
May 9 Spanish Grand Prix Barcalona
May 23 Monaco Grand Prix Monte Carlo
May 30 European Grand Prix Nurburgring
June 13 Canadian Grand Prix Montreal
June 20 US Grand Prix Indianapolis
July 4 British Grand Prix Silverstone
July 11 French Grand Prix Magny-Cours
July 25 German Grand Prix Hockenheim
August 15 Hungarian Grand Prix Budapest
August 29 Belgian Grand Prix Spa-Francorchamps
September 12 Italian Grand Prix Monza
September 26 Chinese Grand Prix Shanghai
October 10 Japanese Grand Prix Suzuka
October 24 Brazilian Grand Prix Sao Paulo