| 1974 | Abandono | 67 | Porsche Carrera RSR | William Vollery/Eric Chapuis/Roger Dorchy |
| 1975 | Abandono | 52 | Porsche Carrera RSR | William Vollery/Roger Dorchy/Eric Chapuis |
| 1976 | Abandono | 72 | Porsche Carrera RS | Jean-Pierre Aeschlimann/Roger Dorchy/William Vollery |
| 1977 | Equipa Não Qualificada | 73 | Porsche Carrera RS | Philippe Jaffrenou/Roger Dorchy/Philippe Streiff |
| 1980 | 4º (2º GTP) | 5 | WM P 79/80 | Guy Fréquelin/Roger Dorchy |
| 1981 | Abandono | 5 | WM P 79/80 | Guy Fréquelin/Roger Dorchy/Xavier Mathiot |
| 1982 | Abandono | 10 | WM P 82 | Guy Fréquelin/Roger Dorchy/Alain Couderc |
| 1983 | 16º (12º GR. C) | 10 | WM P 83 | Roger Dorchy/Alain Couderc/Pascal Fabre |
| 1984 | Abandono | 23 | WM P 83 B | Roger Dorchy/Alain Couderc/Gerard Patté |
| 1985 | Abandono | 43 | WM P 83 B | Claude Haldi/Roger Dorchy/Jean-Claude Andruet |
| 1986 | 12º (3º C2) | 100 | WM P 85 | Pascal Pessiot/Roger Dorchy/Claude Haldi (*)-Claude Haldi/Pascal Pessiot/Roger Dorchy |
| 1987 | Abandono | 52 | WM P 87 | Roger Dorchy/Philippe Gache/Dominique Delestre (*)-Roger Dorchy |
| 1988 | Abandono | 51 | WM P 88 | Roger Dorchy/Claude Haldi/Jean-Daniel Raulet |
| 1989 | Equipa Não Participante | 51 | WM P 489 | Roger Dorchy/Michel Maisonneuve/Philippe Gache |