1999 Rose City Grand Prix
The 1999 Rose City Grand Prix was the fifth round of the 1999 American Le Mans Series season. It took place at Portland International Raceway, Oregon, on August 1, 1999.
Race results
Class winners in bold.| Pos | Class | No | Team | Drivers | Chassis | Tyre | Laps |
| Pos | Class | No | Team | Drivers | Engine | Tyre | Laps |
| 1 | LMP | 1 |  Statistics
|