PORSCHE RACING HISTORY1981 - Watkins Glen 6 Hours
12 July 1981 - Watkins Glen, USA
Rick Mears, Bob Garretson & Johnny Rutherford third in a Porsche 935 K3/80, 5 laps behind the winning Lancia Beta Montecarlo Turbo driven by Riccardo Patrese & Michele Alboreto
Overall - 3rd : Gr.5 - 3rd : GTO - 1st, 2nd, 3rd
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 9 | Porsche 935 K3/80 | 009 00030 | Gr.5 | Rick Mears (USA)/Bob Garretson (USA)/Johnny Rutherford (USA) | Garretson Racing (USA) | 3rd | 3rd | 11th | 168 laps |
| 11 | Porsche 935 K3/80 | 000 00011 | Gr.5 | John Fitzpatrick (GB)/Jim Busby (USA) | John Fitzpatrick Racing (GB) | 4th | 4th | 13th | 160 laps |
| 22 | Porsche 935 K3 | 930 770 0960 | Gr.5 | Marty Hinze (USA)/Dale Whittington (USA)/Preston Henn (USA) | Marty Hinze Racing (USA) | 5th | 5th | 15th | 157 laps |
| 30 | Porsche 935/81 | JR-001 | Gr.5 | Gianpiero Moretti (I)/Bobby Rahal (USA) | Momo Accessories, Inc. (I) | 6th | 6th | 3rd | 157 laps |
| 91 | Porsche 934 | 930 670 0167 | GTO | Chester Vincentz (USA)/Lance Van Every (USA)/John Wood (USA) | Electrodyne, Inc. (USA) | 7th | 1st | 20th | 156 laps |
| 43 | Porsche 935 K3/80 | 000 00013 | Gr.5 | Bob Akin (USA)/Craig Siebert (USA)/Vivian Candy (IRL) | Bob Akin Motor Racing, Inc. (USA) | 8th | 7th | 10th | 146 laps |
| 13 | Porsche 911 Carrera | GTO | Steve Southard (USA)/Mark Altman (USA)/Gary Altman (USA) | Southard Motor Racing (USA) | 9th | 2nd | 25th | 146 laps | |
| 26 | Porsche 911 Carrera RSR | 911 230 0030 | GTO | Tim Selby (USA)/Earl Roe (USA) | Roe/Selby Racing (USA) | 10th | 3rd | 26th | 138 laps |
| 0 | Porsche 935 K3/80 | 000 00010 | Gr.5 | Ted Field (USA)/Bill Whittington (USA) | Interscope IMSA Racing, Inc. (USA) | DNF | 1st | 95 laps - Engine | |
| 86 | Porsche 935/80 | 000 00028 | Gr.5 | Hurley Haywood (USA)/Bruce Leven (USA) | Bayside Disposal Racing (USA) | DNF | 5th | 80 laps - Turbocharger | |
| 7 | Porsche 935 | 930 770 0958 | Gr.5 | Ludwig Heimrath, Sr (CDN)/Ludwig Heimrath, Jr (CDN) | Heimrath Racing (CDN) | DNF | 12th | 64 laps - Drive Shaft | |
| 21 | Porsche 914/6 | 914 043 0188 | GTU | Peter Aschenbrenner (CDN)/Peter Moennick (CDN) | Alps Restoration, Inc. (CDN) | DNF | 29th | 27 laps - Spin | |
| 79 | Porsche 924 Carrera GTR | WP0ZZZ93ZBS720006 | GTO | Tom Winters (USA)/Bob Bergstrom (USA) | Promotion Ltd./Whitehall Capital (USA) | DNF | 18th | 23 laps - Drive Shaft | |
| 18 | Porsche 935 JLP-3 | JLP-3 | Gr.5 | John Paul, Jr. (USA)/John Paul Sr. (USA) | J.L.P. Racing (USA) | DNF | 2nd | 19 laps - Engine | |
| 23 | Porsche 911 | GTU | Stephen Lax (CDN)/Herman Lausberg (CDN) | Stephen Lax Racing (CDN) | DSQ | 32nd | 12 laps- Too Slow | ||
| 33 | Porsche 934 | 930 670 0162 | GTO | Werner Frank (USA)/Rudy Bartling (CDN) | Toyota Village (USA) | DNF | 23rd | 9 laps - Oil Line | |
| 74 | Porsche 911 | 962C-126 | GTO | George Hulse (USA)/Bob Speakman (USA) | DNF | 28th | 8 laps - Suspension | ||
| 36 | Porsche 924 Carrera GTR | WP0ZZZ93ZBS720008 | GTO | Paul Miller (USA)/Kenper Miller (USA) | Herman and Miller Porsche-Audi (USA) | DNF | 21st | 4 laps - Head Gasket |
World Championship for Drivers and Makes Watkins Glen 6 Hours
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