Bobby Rahal CART/Champ Car results at Portland
| Year | Race # | Start | Finish | Car # | Sponsor | Chassis | Engine | Tire | Owner | Qualifying Speed | Laps | X Led | Laps Led | Status | Points |
| 1984 | 5 | 8 | 14 | 5 | 7-Eleven/Red Roof Inns | March | Cosworth | Goodyear | Truesports | 113.659 | 79 | 1 | 3 | gearbox | 0 |
| 1985 | 4 | 3 | 20 | 3 | Budweiser | March | Cosworth | Goodyear | Truesports | 114.910 | 54 | 1 | 21 | oil leak | 0 |
| 1986 | 5 | 8 | 20 | 3 | Budweiser-TrueSport | March | Cosworth | Goodyear | Truesports | 91.397 | 7 | 0 | 0 | oil leak | 0 |
| 1987 | 5 | 3 | 1 | 1 | Budweiser/Truesport | Lola | Cosworth | Goodyear | Truesports | 115.813 | 104 | 2 | 56 | flagged | 21 |
| 1988 | 5 | 6 | 12 | 1 | Budweiser TrueSports | Lola | Judd | Goodyear | Truesports | 116.020 | 101 | 0 | 0 | flagged | 1 |
| 1989 | 6 | 8 | 2 | 18 | Kraco | Lola | Cosworth | Goodyear | Kraco | 118.776 | 104 | 0 | 0 | flagged | 16 |
| 1990 | 6 | 5 | 11 | 18 | STP/Kraco | Lola | Chevrolet | Goodyear | Galles | 120.727 | 98 | 0 | 0 | flagged | 2 |
| 1991 | 7 | 8 | 3 | 18 | STP/Kraco | Lola | Chevrolet | Goodyear | Galles | 120.322 | 104 | 0 | 0 | flagged | 14 |
| 1992 | 6 | 5 | 14 | 12 | Miller Genuine Draft | Lola | Chevrolet | Goodyear | Rahal | 112.920 | 98 | 0 | 0 | flagged | 0 |
| 1993 | 7 | 15 | 4 | 1 | Miller Genuine Draft | Lola | Chevrolet | Goodyear | Rahal | 111.777 | 101 | 0 | 0 | flagged | 12 |
| 1994 | 7 | 17 | 12 | 4 | Miller Genuine Draft | Lola | Honda | Goodyear | Rahal | 113.509 | 99 | 0 | 0 | flagged | 1 |
| 1995 | 9 | 9 | 3 | 9 | Miller Genuine Draft | Lola | Ilmor | Goodyear | Rahal | 116.127 | 102 | 0 | 0 | flagged | 14 |
| 1996 | 9 | 18 | 6 | 18 | Miller Genuine Draft | Reynard | Mercedes | Goodyear | Rahal | 114.761 | 98 | 0 | 0 | flagged | 8 |
| 1997 | 9 | 10 | 24 | 7 | Miller Lite | Reynard | Ford | Goodyear | Rahal | 117.722 | 39 | 0 | 0 | handling | 0 |
| 1998 | 9 | 8 | 6 | 7 | Miller Lite | Reynard | Ford | Firestone | Rahal | 119.781 | 98 | 0 | 0 | flagged | 8 |
