And not forgetting the 21 circuits that hosted one or two showdowns…
Estoril, Portugal – 1984 (Niki Lauda) and 1993 (Alain Prost)
Hungaroring, Hungary – 1992 (Nigel Mansell) and 2001 (Michael Schumacher)
Las Vegas, USA – 1981 (Nelson Piquet) and 1982 (Keke Rosberg)
Aida, Japan – 1995 (Schumacher)
Ain-Diab, Morocco – 1958 (Mike Hawthorn)
Austin, USA – 2015 (Lewis Hamilton)
Brands Hatch, Britain – 1985 (Prost)
Bremgarten, Switzerland – 1954 (Juan Manuel Fangio)
Buddh, India – 2013 (Sebastian Vettel)
East London, South Africa – 1962 (Graham Hill)
Fuji, Japan – 1976 (James Hunt)
Jerez, Spain – 1997 (Jacques Villeneuve)
Kyalami, South Africa – 1983 (Piquet)
Magny-Cours, France – 2002 (Schumacher)
Montreal, Canada – 1980 (Alan Jones)
Osterreichring, Austria – 1971 (Jackie Stewart)
Pedralbes, Spain – 1951 (Fangio)
Porto, Portugal – 1960 (Jack Brabham)
Sebring, USA – 1959 (Brabham)
*Silverstone, Britain – 1955 (Fangio)
Spa-Francorchamps, Belgium – 2004 (Schumacher)
*Only after three subsequent races were cancelled
Photography courtesy of LAT Images