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| Date | Winner | Team | Time | Race Details |
| 27 Apr 1975 | Jochen Mass | McLaren | 42:53.700 | full race results |
| 29 Apr 1973 | Emerson Fittipaldi | Lotus | 1 hr 48:18.700 | full race results |
| 18 Apr 1971 | Jackie Stewart | Tyrrell | 1 hr 49:3.400 | full race results |
| 04 May 1969 | Jackie Stewart | Mecanique-Aviation-Traction | 2 hr 16:53.990 | full race results |
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