| 12.10.1980 | Zolder [Gr.2+2.0/Gr.4+2.0/Gr.5] | 1 | 935 K3/80 | | Jägermeister Kremer Racing | DNA |
| 12.10.1980 | Zolder [Gr.2+2.0/Gr.4+2.0/Gr.5] | 2 | 935 K3 | | Porsche Kremer Racing | DNA |
| 12.10.1980 | Zolder [Gr.2+2.0/Gr.4+2.0/Gr.5] | 3 | 935 K3 | Gerhard Holup | Weralit Elora Racing Team | 9th |
| 12.10.1980 | Zolder [Gr.2+2.0/Gr.4+2.0/Gr.5] | 4 | 935/77A | Dieter Schornstein | Vegla Racingteam Aachen | 1st |
| 12.10.1980 | Zolder [Gr.2+2.0/Gr.4+2.0/Gr.5] | 5 | 935 | "Davit" | Philiffen Bervoets | DNA |
| 12.10.1980 | Zolder [Gr.2+2.0/Gr.4+2.0/Gr.5] | 6 | 935 RSR | Erich Schiebler | Erich Schiebler | DNA |
| 12.10.1980 | Zolder [Gr.2+2.0/Gr.4+2.0/Gr.5] | 8 | 935 L1 | Jan Lundgårdh | Jan Lundgardh | DNA |
| 12.10.1980 | Zolder [Gr.2+2.0/Gr.4+2.0/Gr.5] | 51 | 924 | Friedrich Winkelmann | Essen-Werdener Automobilclub | DNE |
| 12.10.1980 | Zolder [Gr.2+2.0/Gr.4+2.0/Gr.5] | 52 | 911 C | Heinz Kopatz | Renngemeinschaft Holstein | DNE |
| 12.10.1980 | Zolder [Gr.2+2.0/Gr.4+2.0/Gr.5] | 60 | 934 | Peter Pospieszczyk | Kannacher GT Racing | DNE |
| 12.10.1980 | CI Gr.2/4/5 Magione | 219 | 935 | Gabriele Gottifredi | | 4th |
| 12.10.1980 | CI Gr.2/4/5 Magione | | | Zonca | | 8th |
| 12.10.1980 | CI Gr.2/4/5 Magione | | | Tocci | | 17th |
| 12.10.1980 | CI Gr.2/4/5 Magione | | 935 | "Victor" | "Victor" | 2nd |
| 19.10.1980 | Trans-Am Laguna Seca | 9 | 911 SC | Terry Herman | Al Thomas | 35th |
| 19.10.1980 | Trans-Am Laguna Seca | 11 | 911 | Gary Nylander | Bear Gulch Racing | DNS |
| 19.10.1980 | Trans-Am Laguna Seca | 23 | 914/6 | Bob Zulkowski | Metal Craft Racing | 37th |
| 19.10.1980 | Trans-Am Laguna Seca | 45 | 911 | Bill Neal | Autosport | 27th |
| 19.10.1980 | Trans-Am Laguna Seca | 57 | 911 SC | Monte Shelton | Porsche-Audi Northwest | DNS |
| 19.10.1980 | Trans-Am Laguna Seca | 98 | 911 SC | John Bauer | Green Racing | 21st |
| 19.10.1980 | 3 h Hockenheim | | 934 | Willi / Zbinden | | 1st |
| 19.10.1980 | Gr.4 Vallelunga | | | Villa | | 1st |
| 25.10.1980 | Trans-Am Riverside | 19 | 911 SC | Sergio Nardi | Nardi Motors | DNS |
| 25.10.1980 | Trans-Am Riverside | 23 | 914/6 | Bob Zulkowski | Metal Craft Racing | 23rd |
| 25.10.1980 | Trans-Am Riverside | 44 | 914/6 | Joe Korpiel | | 25th |
| 25.10.1980 | Trans-Am Riverside | 57 | 911 SC | Monte Shelton | Porsche-Audi Northwest | 6th |
| 25.10.1980 | Trans-Am Riverside | 98 | 911 SC | John Bauer | Larry Green Racing | 5th |
| 26.10.1980 | MN GT Donington | 20 | 935 K3 | Dudley Wood | Dudley Wood & Charles Ivey Racing | DNA |
| 26.10.1980 | US Champions Road Atlanta [BP] | 26 | | Robert Overby | Overby's Inc./Castrol | DNA |
| 26.10.1980 | US Champions Road Atlanta [CP] | 27 | 914/6 | Earl Roe | Earl Roe | DNA |
| 26.10.1980 | US Champions Road Atlanta [CP] | 69 | 914/6 | Frank Harmstad | Competition Motors | DNA |
| 26.10.1980 | US Champions Road Atlanta [BP] | 74 | 911 SC | John Klug | Jack Klug | DNA |
| 2.11.1980 | CI Gr.2/4/5 Vallelunga | | 935 | "Victor" | "Victor" | 2nd |
| 2.11.1980 | CI Gr.2/4/5 Vallelunga | | | Petenzi | | 3rd |
| 2.11.1980 | CI Gr.2/4/5 Vallelunga | | | Ciacciarelli | | 11th |
| 2.11.1980 | CI Gr.2/4/5 Vallelunga | | | Schizzi | | 9th |
| 2.11.1980 | CI Gr.2/4/5 Vallelunga | | | Villa | | 6th |
| 2.11.1980 | CI Gr.2/4/5 Vallelunga | | | di Gioia | | 5th |
| 2.11.1980 | CI Gr.2/4/5 Vallelunga | | | Tocci | | 10th |
| 6.11.1980 | Giro d'Italia | 346 | 911 | Rossi / Omodei | Motorsport S. | raced |
| 6.11.1980 | Giro d'Italia | 347 | 911 SC | Tinivella / Tarantini / Piva | Tamauto | 13th |
| 6.11.1980 | Giro d'Italia | 348 | 930 | Pittoni / Cecotto / Ravizza | Pioneer-Akleptos | 6th |
| 6.11.1980 | Giro d'Italia | 476 | 911 SC | Busseni / Rossi / Bondesan | Brescia Rally | 7th |
| 6.11.1980 | Giro d'Italia | 477 | 934 | Mercadante / Gualdi / De Nardo | | DNA |
| 6.11.1980 | Giro d'Italia | 478 | 911 SC | Giudici / Giudici / Bullo | Tamauto | 17th |
| 6.11.1980 | Giro d'Italia | 479 | 911 SC | di Gioia / Ricciardi | Apulia | DNA |
| 6.11.1980 | Giro d'Italia | 482 | 911 SC | Ruffini / Uzzeni / Bellosta | Wrangler | 9th |
| 6.11.1980 | Giro d'Italia | 483 | 911 SC | Pantaleoni / Meloni / Tedeschini | Oltrepò | 3rd |
| 6.11.1980 | Giro d'Italia | 486 | 934 | Rinaldi / "Sarrow" / Brancatelli | Motorsport S. | DNA |
| 6.11.1980 | Giro d'Italia | 487 | 911 SC | Merzario / Cuccirelli / "Elio" | Tamauto | DNF |
| 6.11.1980 | Giro d'Italia | 488 | 934 | Alméras / Perramond | Eminence RT | DNF |
| 6.11.1980 | Giro d'Italia | 593 | 935 | Sivel / Jaubert / Decourt | Eminence RT | 8th |
| 6.11.1980 | Giro d'Italia | 594 | 935 | Alméras / "Tilber" | Eminence RT | DNF |
| 6.11.1980 | Giro d'Italia | 595 | 935 J | Moretti / Schön / Radaelli | | DNF |
| 6.11.1980 | Giro d'Italia | 696 | 934 | Bono / Panaro | Magazzini Auto | DNA |
| 14.11.1980 | Australian SCC Calder | 9 | 911 Carrera RSR | Chris Hones | | raced |
| 16.11.1980 | GP Macau [Guia] | 15 | 935 RSR | Jim Sweeney | | 3rd |
| 16.11.1980 | GP Macau [Guia] | 16 | 935 RSR | Helmet Greiner | | 2nd |
| 30.11.1980 | 250 mile Daytona Finale | 0 | 935 K3/80 | Ted Field | Interscope Racing | 49th |
| 30.11.1980 | 250 mile Daytona Finale | 00 | 935 K3/80 | Danny Ongais | Interscope Racing | 36th |
| 30.11.1980 | 250 mile Daytona Finale | 01 | 911 S | J. Kurt Roehrig | | 58th |
| 30.11.1980 | 250 mile Daytona Finale | 04 | 914/6 | DiLella / Cueto | DiLella Racing | 26th |
| 30.11.1980 | 250 mile Daytona Finale | 07 | 935 | Ludwig Heimrath | Heimrath Racing | 59th |
| 30.11.1980 | 250 mile Daytona Finale | 08 | 911 SC | Speer / Ratcliff | Moran Construction | 22nd |
| 30.11.1980 | 250 mile Daytona Finale | 2 | 935 | Hinze / Belcher | Marty Hinze | 5th |
| 30.11.1980 | 250 mile Daytona Finale | 5 | 935 K3 | Bob Akin | Racing Associates | 56th |
| 30.11.1980 | 250 mile Daytona Finale | 8 | 911 Carrera RSR | Beasley / Grantham | | 60th |
| 30.11.1980 | 250 mile Daytona Finale | 9 | 935 K3 | Preston Henn | Preston Henn | 57th |
| 30.11.1980 | 250 mile Daytona Finale | 18 | 935 JLP-2 | Paul / Paul, Jr. | JLP Racing | 2nd |
| 30.11.1980 | 250 mile Daytona Finale | 30 | 935 J | Moretti / Jöst | Momo/Electrodyne | 1st |
| 30.11.1980 | 250 mile Daytona Finale | 34 | 911 S | George Drolsom | Drolsom Racing | 20th |
| 30.11.1980 | 250 mile Daytona Finale | 35 | 934 | Mandy Gonzalez | | 48th |
| 30.11.1980 | 250 mile Daytona Finale | 36 | 911 | Case / Panaccione | Case Racing | 53rd |
| 30.11.1980 | 250 mile Daytona Finale | 38 | 911 Carrera RSR | Fernandez / Ferrer | Boricua Racing | 13th |
| 30.11.1980 | 250 mile Daytona Finale | 45 | 911 Carrera RSR | Albert Naon | | 39th |
| 30.11.1980 | 250 mile Daytona Finale | 46 | 935 J | Merl / de Narváez | | 3rd |
| 30.11.1980 | 250 mile Daytona Finale | 52 | 911 | Snow / Snow | | 24th |
| 30.11.1980 | 250 mile Daytona Finale | 54 | 911 Carrera RSR | Tony Garcia | Montura Racing | 34th |
| 30.11.1980 | 250 mile Daytona Finale | 58 | 911 Carrera RSR | Hochreuter / Brezinka | | 17th |
| 30.11.1980 | 250 mile Daytona Finale | 59 | 935/80 | Peter Gregg | Brumos Porsche | DNQ |
| 30.11.1980 | 250 mile Daytona Finale | 62 | 911 | Bill Koll | Koll Motor Sports | 62nd |
| 30.11.1980 | 250 mile Daytona Finale | 63 | 911 Carrera RSR | Luis Mendez | Mendez Racing | 31st |
| 30.11.1980 | 250 mile Daytona Finale | 86 | 935 | Hurley Haywood | Bayside Disposal Racing | 19th |
| 30.11.1980 | 250 mile Daytona Finale | 91 | 911 Carrera RSR | Schramm / Frank | Framm Promotions | 10th |
| 30.11.1980 | 250 mile Daytona Finale | 94 | 935 K3 | Bill Whittington | Whittington Brothers Racing | 67th |
| 30.11.1980 | 250 mile Daytona Finale | 95 | 935 K3 | Dale Whittington | Whittington Bros. Racing | 35th |