| Race | Date | Circuit | Winner Driver | Winner Constructor |
|---|---|---|---|---|
| XI Pau Grand Prix | 10 April | Pau | Juan Manuel Fangio | Maserati |
| II Richmond Trophy | 10 April | Goodwood | Reg Parnell | Maserati |
| V San Remo Grand Prix | 16 April | Ospedaletti | Juan Manuel Fangio | Alfa Romeo |
| IV Grand Prix de Paris | 30 April | Montlhéry | Georges Grignard | Talbot-Lago |
| XII British Empire Trophy | 15 June | Douglas | Bob Gerard | ERA |
| IV Gran Premio di Bari | 9 July | Lungomare | Giuseppe Farina | Alfa Romeo |
| IV J.C.C. Jersey Road Race | 13 July | Saint Helier | Peter Whitehead | Ferrari |
| XII Circuit de l'Albigeois | 16 July | Albi (Les Planques) | Louis Rosier | Talbot-Lago |
| I Grote Prijs van Nederland | 23 July | Zandvoort | Louis Rosier | Talbot-Lago |
| III Grand Prix des Nations | 30 July | Geneva | Juan Manuel Fangio | Alfa Romeo |
| I Nottingham Trophy | 7 August | Gamston | David Hampshire | Maserati |
| IV Ulster Trophy | 12 August | Dundrod | Peter Whitehead | Ferrari |
| XIX Coppa Acerbo | 15 August | Pescara | Juan Manuel Fangio | Alfa Romeo |
| I Sheffield Telegraph Trophy | 19 August | Gamston | Cuth Harrison | ERA |
| II BRDC International Trophy | 26 August | Silverstone | Giuseppe Farina | Alfa Romeo |
| III Goodwood Trophy | 30 September | Goodwood | Reg Parnell | BRM |
| X Gran Premio de Penya Rhin | 29 October | Pedralbes | Alberto Ascari | Ferrari |
| Grand Prix of Chile | 17 December | Pedro de Valdivia Norte | Juan Manuel Fangio | Maserati |