| 22.3.1980 | 12 h Sebring | 0 | 935 K3/80 | Field / Ongais | Interscope Racing | 2nd |
| 22.3.1980 | 12 h Sebring | 00 | 935/77A | Ongais / Field | Interscope Racing | DNA |
| 22.3.1980 | 12 h Sebring | 05 | 935 K3 | Akin / Woods / McKitterick | Mendez/Woods/Akin | 5th |
| 22.3.1980 | 12 h Sebring | 06 | 911 Carrera RSR | Mullen / Fassler / Siebert | Fassler-Mullen Racing | 45th |
| 22.3.1980 | 12 h Sebring | 08 | 911 SC | Ratcliff / Speer / Wolters | Moran Construction | 35th |
| 22.3.1980 | 12 h Sebring | 09 | 935 K3 | Paul / Henn / Holbert | Thunderbird Swap Shop | 4th |
| 22.3.1980 | 12 h Sebring | 4 | 935 | Marcus / Harmon / Hinze | Dick Barbour Racing | 60th |
| 22.3.1980 | 12 h Sebring | 5 | 935 K3 | Mendez / Redman / Miller | Mendez/Woods/Akin | 64th |
| 22.3.1980 | 12 h Sebring | 6 | 935 K3/80 | Fitzpatrick / Barbour | Dick Barbour Racing | 1st |
| 22.3.1980 | 12 h Sebring | 13 | 935 K3 | Townsend / Morton | Andial Racing | 61st |
| 22.3.1980 | 12 h Sebring | 18 | 935 JLP-2 | Paul / Holbert | JLP Racing | DNA |
| 22.3.1980 | 12 h Sebring | 22 | 914/6 | Hirsch / Brezinka / Aschenbrenner | R & H Racing | 20th |
| 22.3.1980 | 12 h Sebring | 23 | 914/6 | Zulkowski / Brisken / Nylander | Metalcraft Racing | 55th |
| 22.3.1980 | 12 h Sebring | 24 | 914/6 | DiLella / Cueto | DiLella Racing | 28th |
| 22.3.1980 | 12 h Sebring | 28 | 911 S | Overby | Hamilton House Racing | 75th |
| 22.3.1980 | 12 h Sebring | 30 | 935 J | Moretti / Pianta / Zorzi | Electrodyne | 27th |
| 22.3.1980 | 12 h Sebring | 31 | 911 | Lopez / Arzeno | Lopez Bros. | 25th |
| 22.3.1980 | 12 h Sebring | 32 | 911 Carrera RSR | "Jamsal" / Pineda | Scorpio Racing | 52nd |
| 22.3.1980 | 12 h Sebring | 36 | 911 | Panaccione | Case Racing | 79th |
| 22.3.1980 | 12 h Sebring | 38 | 911 Carrera RSR | Fernandez / Ferrer / Lange | Boricua Racing | 54th |
| 22.3.1980 | 12 h Sebring | 46 | 911 Carrera RSR | de Narváez / Londono | de Narvaez Enterprises | 26th |
| 22.3.1980 | 12 h Sebring | 49 | 911 Carrera RSR | Henderson / Copeman / Humphreys | Tortilla Flats Racing | 32nd |
| 22.3.1980 | 12 h Sebring | 51 | 911 Carrera RSR | Kirby / Baker / Sherwin | Kirby-Hitchcock Racing | 37th |
| 22.3.1980 | 12 h Sebring | 52 | 911 | Snow / Cripe | Snowmobile Racing | DNA |
| 22.3.1980 | 12 h Sebring | 53 | 935 | Leven / Haywood | Bruce Leven | DNS |
| 22.3.1980 | 12 h Sebring | 54 | 911 Carrera RSR | Garcia / Naon / Herman | Montura Racing | 23rd |
| 22.3.1980 | 12 h Sebring | 55 | 935 | Kent-Cooke / St. James | Condor Racing | 49th |
| 22.3.1980 | 12 h Sebring | 57 | 914/4 | Baker / Scott / Gilliland | Personalized Porsche | 33rd |
| 22.3.1980 | 12 h Sebring | 58 | 934 | Gonzalez / Febles / Soldevilla | Coco Lopez/Pina Colada | 42nd |
| 22.3.1980 | 12 h Sebring | 60 | 911 Carrera RSR 3.0 | Ferran / Bond / Refenning | Bill Ferran | 29th |
| 22.3.1980 | 12 h Sebring | 67 | 911 | Quintana / Garcia | Manuel Quintana Racing | DNS |
| 22.3.1980 | 12 h Sebring | 71 | 911 S | Jennings / Bean / Ashby | Bruce Jennings | 56th |
| 22.3.1980 | 12 h Sebring | 83 | 911 Carrera RSR | Deacon / Moennick | David Deacon | 57th |
| 22.3.1980 | 12 h Sebring | 85 | 914/6 | Hulen / Coupland | John E. Hulen | 73rd |
| 22.3.1980 | 12 h Sebring | 86 | 935/77A | Gregg / Haywood / Leven | Bayside Disposal Racing | 10th |
| 22.3.1980 | 12 h Sebring | 87 | 911 | Bitterauf / Moxley / Smith | Der Klaus Haus | 24th |
| 22.3.1980 | 12 h Sebring | 89 | 911 Carrera RSR | Soto / Rodriguez | Hector Huerta Racing | 67th |
| 22.3.1980 | 12 h Sebring | 93 | 935 K3 | Whittington / Whittington / Whittington | Whittington Bros. | 3rd |
| 22.3.1980 | 12 h Sebring | 94 | 935/79 | Whittington / Hobbs | Whittington Bros. | DNA |
| 22.3.1980 | 12 h Sebring | 98 | 911 Carrera RSR | Van Every / Tisdelle | Van Every Racing | 21st |
| 23.3.1980 | DRM Zolder Bergischer Löwe | 2 | 935 K3/80 | Axel Plankenhorn | Jägermeister Kremer Racing | 3rd |
| 23.3.1980 | DRM Zolder Bergischer Löwe | 3 | 935 K3 | | Jägermeister Kremer Racing | DNA |
| 23.3.1980 | DRM Zolder Bergischer Löwe | 4 | 935 K3 | Edgar Dören | Weralit-Elora-Team | 4th |
| 23.3.1980 | DRM Zolder Bergischer Löwe | 5 | 935/77A | Dieter Schornstein | Vegla-Racing-Team | 5th |
| 23.3.1980 | DRM Zolder Bergischer Löwe | 6 | 935 J | Rolf Stommelen | Liqui Moly équipe | 1st |
| 23.3.1980 | DRM Zolder Bergischer Löwe | 7 | 935 J | Volkert Merl | Liqui Moly équipe | DNS |
| 23.3.1980 | DRM Zolder Bergischer Löwe | 8 | 935/77A | Franz Gschwender | Franz Gschwender | DNS |
| 23.3.1980 | DRM Zolder Bergischer Löwe | 11 | 935 K3 | Claude Bourgoignie | Team Willeme | DNF |
| 23.3.1980 | DRM Zolder Bergischer Löwe | 12 | 935 | "Davit" | Team Willeme | 6th |
| 23.3.1980 | DRM Zolder Bergischer Löwe | 16 | 935/80 | Bob Wollek | RG-Motorsportverband Bergisch Land | 2nd |
| 23.3.1980 | DRM Zolder Bergischer Löwe | 21 | 934 | "Harry Hirsch" | "Harry Hirsch" | 10th |
| 23.3.1980 | DRM Zolder Bergischer Löwe | 26 | 911 SC | Peter Bulian | Peter Bulian | 11th |
| 23.3.1980 | DRM Zolder Bergischer Löwe | 88 | 924 | Friedrich Winkelmann | Essen-Werdener AC | 18th |
| 30.3.1980 | DRM Nürburgring 300 | 2 | 935 K3/80 | Axel Plankenhorn | Jägermeister Kremer Racing | DNF |
| 30.3.1980 | DRM Nürburgring 300 | 4 | 935 K3 | Edgar Dören | Weralit-Elora Team | DNF |
| 30.3.1980 | DRM Nürburgring 300 | 5 | 935/77A | Dieter Schornstein | Vegla-Racing Team | 6th |
| 30.3.1980 | DRM Nürburgring 300 | 6 | 935 J | Rolf Stommelen | Liqui Moly Equipe | 2nd |
| 30.3.1980 | DRM Nürburgring 300 | 7 | 935 J | Volkert Merl | Liqui Moly Equipe | 1st |
| 30.3.1980 | DRM Nürburgring 300 | 16 | 935/80 | Bob Wollek | Gelo Racing Team Georg Loos Werbe KG | DNF |
| 30.3.1980 | DRM Nürburgring 300 | 26 | 911 SC | Peter Bulian | Peter Bulian | 7th |
| 30.3.1980 | DRM Nürburgring 300 | 27 | 930 | Matthias Lörper | Norddeutscher Automobilclub | 5th |
| 30.3.1980 | DRM Nürburgring 300 | 64 | 935 L1 | Jan Lundgårdh | Tuff Kote Dinol | 10th |
| 6.4.1980 | MN GT Donington | 3 | 935 K3 | Dudley Wood | Charles Ivey Racing | DNA |
| 6.4.1980 | MN GT Donington | 4 | 911 SC | Adrian Yates-Smith | Malaya Garage Ltd. | DNA |
| 6.4.1980 | MN GT Donington | 9 | 934 | Paul Edwards | Paul Edwards | DNA |
| 6.4.1980 | SM Dijon | | 935 | Rolf Madörin | | ?th |
| 6.4.1980 | SM Dijon | | 934 | Edi Kofel | | ?th |
| 6.4.1980 | SM Dijon | | Turbo | Sarteur | | ?th |
| 7.4.1980 | CI Gr.2/4/5 Magione | | 935 | "Victor" | "Victor" | 1st |
| 7.4.1980 | CI Gr.2/4/5 Magione | | | Petenzi | | 2nd |
| 13.4.1980 | 100 mile Road Atlanta | 00 | 935 K3/80 | Ted Field | Interscope Racing | 14th |
| 13.4.1980 | 100 mile Road Atlanta | 03 | 934 | Werner Frank | Werner Frank | 16th |
| 13.4.1980 | 100 mile Road Atlanta | 07 | 935 | Ludwig Heimrath | Ludwig Heimrath | 27th |
| 13.4.1980 | 100 mile Road Atlanta | 09 | 935 K3 | Preston Henn | Preston Henn | 24th |
| 13.4.1980 | DRM Hockenheim Jim Clark | 2 | 935 K3/80 | Axel Plankenhorn | Jägermeister Kremer Racing | 2nd |
| 13.4.1980 | DRM Hockenheim Jim Clark | 3 | 935 K3 | | Porsche Kremer Racing | DNA |
| 13.4.1980 | DRM Hockenheim Jim Clark | 4 | 935 K3 | Jürgen Lässig | Weralit Elora Team | DNF |
| 13.4.1980 | 100 mile Road Atlanta | 5 | 935 K3 | Bob Akin | Racing Associates | 15th |
| 13.4.1980 | DRM Hockenheim Jim Clark | 5 | 935 K3 | | Porsche Kremer Racing | DNA |
| 13.4.1980 | 100 mile Road Atlanta | 6 | 935 K3/80 | John Fitzpatrick | Dick Barbour Racing | 30th |
| 13.4.1980 | DRM Hockenheim Jim Clark | 6 | 935 J | Rolf Stommelen | Liqui Moly Equipe | DNF |
| 13.4.1980 | DRM Hockenheim Jim Clark | 7 | 935 J | Volkert Merl | Liqui Moly Equipe | 3rd |
| 13.4.1980 | DRM Hockenheim Jim Clark | 8 | 935 K3 | | Porsche Kremer Racing | DNA |
| 13.4.1980 | DRM Hockenheim Jim Clark | 9 | 935/80 | Bob Wollek | Gelo Racing Team Georg Loos Werbe KG | 4th |
| 13.4.1980 | DRM Hockenheim Jim Clark | 10 | 935/77A | Dieter Schornstein | Vegla Racing Team | 5th |
| 13.4.1980 | DRM Hockenheim Jim Clark | 26 | 911 SC | Peter Bulian | Peter Bulian | ?th |
| 13.4.1980 | 6 h Mugello | 27 | 935 | Salam | Christian Bussi | DNF |
| 13.4.1980 | 100 mile Road Atlanta | 32 | 934 | Chester Vincentz | Electrodyne Racing | 29th |
| 13.4.1980 | Road Atlanta [GTU] | 34 | 911 S | George Drolsom | Drolsom Racing | 14th |
| 13.4.1980 | 100 mile Road Atlanta | 35 | 934 | Mandy Gonzalez | Dyn-A-Tune Racing | 26th |
| 13.4.1980 | 6 h Mugello | 36 | 934 | Schlesser / Guérin / Gasparetti | Jacques Guérin | 9th |
| 13.4.1980 | 100 mile Road Atlanta | 38 | 911 Carrera RSR | Bonky Fernandez | Boricua Racing | 18th |
| 13.4.1980 | 6 h Mugello | 42 | 908/3 | Barth / Brunn | Siegfried Brunn | DNF |
| 13.4.1980 | 100 mile Road Atlanta | 54 | 911 Carrera RSR | Tony Garcia | Montura Racing | 13th |
| 13.4.1980 | Road Atlanta [GTU] | 57 | 914/4 | Wayne Baker | Personalized Autohaus | 12th |
| 13.4.1980 | 100 mile Road Atlanta | 63 | 911 Carrera RSR | Luis Mendez | Mendez Racing | 11th |
| 13.4.1980 | Road Atlanta [GTU] | 64 | 911 | Dennis Aase | Dennis Aase | 2nd |
| 13.4.1980 | 100 mile Road Atlanta | 85 | 935 | Bruce Leven | Bruce Leven | 25th |
| 13.4.1980 | 100 mile Road Atlanta | 89 | 911 Carrera RSR | Ernesto Soto | Hector Huerta Racing | 17th |
| 13.4.1980 | DRM Hockenheim Jim Clark | | 911 Carrera RSR | Roger Müller | | DNF |