Justin Marks Grand-Am Rolex Series results at Barber
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 | 11 | 15 | 9 | GT | 1 | 21 | Prototype Technology Group | BMW M3 | PTG | 1:27.220 | 87 | 0 | 0 | 35 |
| 2005 | 8 | 21 | 14 | GT | 1 | 16 | F1 Air | BMW M3 | PTG | 1:31.036 | 93 | 0 | 0 | 35 |
| 2009 | 8 | 25 | 25 | GT | 10 | 67 | Construct Corps/No Fear Energy Drink/Voodoo Ride/K1 Speed | Porsche GT3 Cup | TRG | 1:30.293 | 100 | 0 | 0 | 21 |
