Justin Marks Grand-Am Rolex Series results at Fontana (road)
Back to Justin Marks career stats
| Year | Race # | Start | Finish | Class | Class Rank | Car # | Team | Engine | Owner | Qualifying Time | Laps | X Led | Laps Led | Points |
| 2004 | 12 | 19 | 18 | GT | 6 | 21 | Prototype Technology Group | BMW M3 | PTG | 1:38.092 | 82 | 0 | 0 | 25 |
| 2005 | 3 | 23 | 24 | GT | 7 | 16 | F1 Air | BMW M3 | PTG | 1:41.589 | 81 | 0 | 0 | 24 |
