| 1984 | Abandono | 47 | Porsche 956 | Jürgen Lässig/George Fouché/John Graham |
| 1985 | Não Classificado (Distância Insuficiente). | 74 | Gebhardt JC2 853 | Frank Jelinsky/John Graham/Nick Adams |
| 1988 | Abandono | 191 | Argo JM 19 C | Olindo Iacobelli/John Graham/Alain Ianetta |
| 1998 | Abandono | 62 | Porsche 911 GT2 | John Morton/John Graham/Harald Grohs |
| 2000 | 25º (1º LMP675) | 32 | Lola B2K/40 | Scott Maxwell/John Graham/Greg Wilkins
(*)-Scott Maxwell/John Graham |
| 2001 | Abandono | 37 | Reynard 01 Q-LM | John Graham/Milka Duno/David Murry
(*)-John Graham/Milka Duno |
| 2002 | Abandono | 19 | Panoz LMP-07 | Didier de Radigues/Milka Duno/John Graham |
| 2002 | Equipa Retirada | 20 | Panoz LMP-07 | Milka Duno/Scott Maxwell/John Graham |
| 2004 | 20º (8º LM1) | 4 | Lola B2K | Christian Vann/Benjamin Leuenberger/Didier André
(*)-Christian Vann/Benjamin Leuenberger/John Graham |
(Canadá) 