| 1994 | 5th (1st IMSA GTS) | 75 | Nissan 300 ZX Turbo | Steve Millen/Johnny O'Connell/John Morton |
| 1997 | Abandon | 14 | BRM P 301 | Jésus Pareja/Eliseo Salazar/Harri Toivonen/Johnny O Connell
(*)-Harri Toivonen/Johnny O'Connell |
| 1998 | Abandon | 44 | Panoz Esperante GT-R1 | Eric Bernard/Christophe Tinseau/Johnny O'Connell
(*)-Eric Bernard/David Brabham |
| 1999 | 11th (9th LMP) | 11 | Panoz LMP-1 Roadster S | Jan Magnussen/Johnny O'Connell/Max Angelelli |
| 2000 | 5th (5th LMP900) | 12 | Panoz LMP-1 Roadster S | Johnny O'Connell/Hiroki Katoh/Pierre-Henri Raphanel |
| 2001 | 8th (1st LM GTS) | 63 | Chevrolet Corvette C5R | Ron Fellows/Scott Pruet/Johnny O'Connell |
| 2002 | 11th (1st LMGTS) | 63 | Chevrolet Corvette C5R | Ron Fellows/Oliver Gavin/Johnny O'Connell |
| 2003 | 11th (2nd LMGTS) | 50 | Chevrolet Corvette C5R | Oliver Gavin/Kelly Collins/Andy Pilgrim
(*)-Ron Fellows/Johnny O'Connell/Frank Fréon/Oliver Gavin |
| 2003 | 12th (3rd LMGTS) | 53 | Chevrolet Corvette C5R | Ron Fellows/Johnny O'Connell/Frank Fréon
(*)-Oliver Gavin/Kelly Collins/Andy Pilgrim/Johnny O'Connell |
| 2004 | 8th (2nd GTS) | 63 | Chevrolet Corvette C5R | Ron Fellows/Massimiliano Papis/Johnny O'Connell |
| 2005 | 6th (2nd LM GT1) | 63 | Chevrolet Corvette C6R | Ron Fellows/Johnny O'Connell/Massimiliano Papis |
| 2006 | 12th (7th LMGT1) | 63 | Chevrolet Corvette C6R | Ron Fellows/Johnny O'Connell/Massimiliano Papis |
| 2007 | 6th (2nd LMGT1) | 63 | Chevrolet Corvette C6R | Johnny O'Connell/Jan Magnussen/Ron Fellows |
| 2008 | 14th (2nd LMGT1) | 63 | Chevrolet Corvette C6R | Johnny O'Connell/Jan Magnussen/Ron Fellows |
| 2009 | 15th (1st LMGT1) | 63 | Chevrolet Corvette C6R | Johnny O'Connell/Jan Magnussen/Antonio Garcia |
| 2010 | Abandon | 63 | Chevrolet Corvette C6R ZR1 | Jan Magnussen/Johnny O'Connell/Antonio Garcia |
| 2016 | 39th (9th LMGTE Am) | 57 | Chevrolet Corvette C7-Z06 | Johnny O'Connell/Olivier Bryant/Mark Patterson |
(United States of America) 
