PORSCHE RACING HISTORY1979 - Portland 100 Miles
5 August 1979 - Portland International Raceway, USA
Peter Gregg wins in a Porsche 935/79
Overall - 1st, 2nd, 3rd : GTX - 1st, 2nd, 3rd : GTO - 1st, 3rd
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 59 | Porsche 935/79 | 930 990 0030 | GTX | Peter Gregg (USA) | 1st | 1st | 1st | 51 laps | |
| 7 | Porsche 935 | 935-001 | GTX | Hurley Haywood (USA) | Vasek Polak Racing (USA) | 2nd | 2nd | 3rd | 51 laps |
| 11 | Porsche 935 | 009 00029 | GTX | Bruce Canepa (USA) | Bruce Canepa (USA) | 3rd | 3rd | 4th | 51 laps |
| 17 | Porsche 935 | 930 770 0955 | GTX | Milt Minter (USA) | Vasek Polak Racing (USA) | 4th | 4th | 6th | 50 laps |
| 5 | Porsche 935 | 930 770 0957 | GTX | Charles Mendez (USA) | 5th | 5th | 8th | 50 laps | |
| 0 | Porsche 935/79 | 930 990 0029 | GTX | Ted Field (USA) | Interscope Racing (USA) | 6th | 6th | 10th | 50 laps |
| 71 | Porsche 935 | 930 890 0024 | GTX | Rob McFarlin (USA) | Dick Barbour Racing (USA) | 8th | 8th | 11th | 49 laps |
| 13 | Porsche 935 | 930 770 0905 | GTX | Randolph Townsend (USA) | Andial (USA) | 9th | 9th | 9th | 49 laps |
| 66 | Porsche 935 | 930 770 0959 | GTX | Kees Nierop (CDN) | Stanton/Barbour (USA) | 10th | 10th | 13th | 48 laps |
| 21 | Porsche 911 Carrera RSR | 911 460 0059 | GTO | Neil Shelton (USA) | 11th | 1st | 17th | 48 laps | |
| 55 | Porsche 911 Carrera RSR | 911 560 9121 | GTO | Howard Meister (USA) | 13th | 3rd | 16th | 48 laps | |
| 54 | Porsche 911 Carrera RSR | 911 360 0610 | GTO | Tony Garcia (USA) | Montura Racing (USA) | 14th | 4th | 22nd | 47 laps |
| 31 | Porsche 911 Carrera RSR | GTO | Michael Hammond (USA) | 17th | 7th | 23rd | 43 laps | ||
| 56 | Porsche 911 | 911 210 0224 | GTO | Rick Borlase (USA) | Rick Borlase | 18th | 8th | 26th | 38 laps |
| 07 | Porsche 911 Carrera RSR | 911 560 9114 | GTO | Dave Cowart (USA) | Morrison's | 20th | 10th | 21st | 32 laps |
| 68 | Porsche 911 Carrera RSR | 005 0009 | GTO | Luis Mendez (DR) | 23rd | 12th | 19th | 25 laps - DNF | |
| 30 | Porsche 935/79 | 930 990 0032 | GTX | Gianpiero Moretti (I) | Electrodyne/Moretti (I) | 24th | 12th | 7th | 23 laps - DNF |
| 46 | Porsche 911 Carrera RSR | 911 360 0865 | GTO | Mauricio DeNarváez (COL) | de Narvaez Racing (CO) | 25th | 13th | 20th | 18 laps - DNF |
| 85 | Porsche 935 | 930 770 0909 | GTX | Bruce Leven (USA) | Bayside Disposal Racing (USA) | 29th | 15th | 14th | 5 laps - DNF |
IMSA - International Motor Sport Association
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