27 May | Circuit Bremgarten![]() XI Großer Preis der Schweiz |
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30 May | Indianapolis Motor Speedway![]() 35th International 500-Mile Sweepstakes |
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17 Jun | Circuit de Spa-Francorchamps![]() XIII GROTE PRIJS VAN BELGIE |
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1 Jul | Circuit de Reims-Gueux![]() XXXVIII GRAND PRIX DE L'A.C.F. |
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14 Jul | Silverstone Circuit![]() IV RAC British Grand Prix |
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29 Jul | Nürburgring Nordschleife![]() XIV Großer Preis von Deutschland |
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16 Sep | Autodromo Nazionale Monza![]() XXII GRAN PREMIO D'ITALIA |
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28 Oct | Circuito de Pedralbes![]() XI Gran Premio de España |
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