| Year | Race # | Start | Finish | Class | Class Rank | Car # | Team | Chassis | Engine | Tire | Owner | Qualifying Time | Laps | X Led | Laps Led | Status | Points |
| 1999 | 2 | 30 | 27 | GT | 8 | 02 | Metamor Software Solutions | Porsche 911 Carrera RSR | Porsche 3.8L Flat-6 | Pirelli | Reiser Callas | | 101 | 0 | 0 | running | 12 |
| 1999 | 6 | 41 | 44 | GT | 13 | 02 | Reiser Callas Rennsport | Porsche 911 Carrera RSR | Porsche 3.8L Flat-6 | Pirelli | Reiser Callas | | 147 | 0 | 0 | electrical | 7 |
| 2000 | 9 | 30 | 39 | GT | 16 | 70 | Informix Software/Shell/Mac Tools/Pirelli | Porsche 911 GT3-R | Porsche 3.6L Flat-6 | Pirelli | Skea | | 6 | 0 | 0 | accident | 0 |
| 2001 | 10 | 27 | 31 | GT | 15 | 10 | Yokohama/BMW | BMW M3 GTR | BMW 4.0L V8 | Yokohama | PTG | 1:24.041 | 136 | 0 | 0 | mechanical | 0 |
| 2003 | 2 | 33 | 17 | GT | 4 | 79 | J3 Motorsport, Inc. | Porsche 911 GT3-RS | Porsche 3.6L Flat-6 | Michelin | J3 | 1:28.937 | 110 | 0 | 0 | running | 10 |
| 2003 | 9 | 25 | 16 | GT | 5 | 79 | J3 Motorsport, Inc. | Porsche 911 GT3-RS | Porsche 3.6L Flat-6 | Michelin | J3 | 1:33.864 | 351 | 0 | 0 | running | 8 |
| 2004 | 8 | 25 | 10 | GT | 3 | 31 | Petersen Motorsports/MMPIE/P.A.W.S./Westward Ho Casino | Porsche 911 GT3-RSR | Porsche 3.6L Flat-6 | Michelin | White Lightning | 1:24.168 | 357 | 0 | 0 | running | 19 |
| 2007 | 11 | 26 | 25 | GT2 | 10 | 53 | Robertson Racing | Panoz Esperante GT-LM | Ford (Élan) 5.0L V8 | Dunlop | Robertson | 1:33.366 | 106 | 0 | 0 | accident | 0 |
| 2008 | 10 | 28 | 29 | GT2 | 15 | 40 | Robertson Racing | Ford GT-R Mk. VII | Ford 5.0L V8 | Dunlop | Robertson | 1:21.438 | 263 | 0 | 0 | mechanical | 0 |
| 2009 | 9 | 13 | 20 | GT2 | 10 | 40 | Doran Designs, Inc. | Ford GT-R Mk. VII | Ford 5.0L V8 | Dunlop | Robertson | 1:20.819 | 142 | 0 | 0 | running | 11 |
| 2010 | 9 | 24 | 19 | GT2 | 8 | 04 | Doran Design Ford | Ford GT-R Mk. VII | Ford 5.0L V8 | Dunlop | Robertson | 1:20.777 | 349 | 0 | 0 | running | 13 |
| 2011 | 9 | 52 | 26 | GT | 12 | 40 | Doran | Ford GT-R Mk. VII | Élan 5.0L V8 | Michelin | Robertson | no time | 350 | 0 | 0 | running | 11 |
