| 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 | 03 | 934 | Frank / Brolin | Toyota Village | 12th |
| 22.3.1980 | 12 h Sebring | 05 | 935 K3 | Akin / Woods / McKitterick | Mendez/Woods/Akin | 5th |
| 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 | 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 | 23 | 914/6 | Zulkowski / Brisken / Nylander | Metalcraft Racing | 55th |
| 22.3.1980 | 12 h Sebring | 28 | 911 S | Overby | Hamilton House Racing | 75th |
| 22.3.1980 | 12 h Sebring | 32 | 911 Carrera RSR | "Jamsal" / Pineda | Scorpio Racing | 52nd |
| 22.3.1980 | 12 h Sebring | 34 | 911 S | Drolsom / Johnson / Hoskins | Drolsom Racing | 18th |
| 22.3.1980 | 12 h Sebring | 51 | 911 Carrera RSR | Kirby / Baker / Sherwin | Kirby-Hitchcock Racing | 37th |
| 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 | 60 | 911 Carrera RSR 3.0 | Ferran / Bond / Refenning | Bill Ferran | 29th |
| 22.3.1980 | 12 h Sebring | 68 | 911 Carrera RSR | Mendez / Rodriguez / Soto | Porsche Montecarlo | 11th |
| 22.3.1980 | 12 h Sebring | 83 | 911 Carrera RSR | Deacon / Moennick | David Deacon | 57th |
| 22.3.1980 | 12 h Sebring | 86 | 935/77A | Gregg / Haywood / Leven | Bayside Disposal Racing | 10th |
| 22.3.1980 | 12 h Sebring | 95 | 911 | Ramirez / Villa / Gordillo | Mike Ramirez | 14th |
| 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 Lundgardh | 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 | | Turbo | Sarteur | | ?th |
| 6.4.1980 | SM Dijon | | 935 | Rolf Madörin | | ?th |
| 6.4.1980 | SM Dijon | | 934 | Edi Kofel | | ?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 | 0 | 935 K3/80 | Danny Ongais | Interscope Racing | 5th |
| 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 | 05 | 935 K3 | Bob Akin | Racing Associates | DNA |
| 13.4.1980 | 100 mile Road Atlanta | 06 | 911 Carrera | Paul Fassler | Fassler-Mullen Racing | DNA |
| 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 | DRM Hockenheim Jim Clark | 6 | 935 J | Rolf Stommelen | Liqui Moly Equipe | DNF |
| 13.4.1980 | 100 mile Road Atlanta | 6 | 935 K3/80 | John Fitzpatrick | Dick Barbour Racing | 30th |
| 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 | 100 mile Road Atlanta | 15 | 935 | Roy Woods | Racing Associates | DNA |
| 13.4.1980 | 100 mile Road Atlanta | 18 | 935 JLP-2 | John Paul | John Paul | 6th |
| 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 | 6 h Mugello | 28 | 935 | Destic / Snobeck | Herve Poulain | 8th |
| 13.4.1980 | 6 h Mugello | 29 | 935 RSR | Schiebler / Müller | Valvoline Deutschland | DNF |
| 13.4.1980 | 100 mile Road Atlanta | 30 | 935 J | Gianpiero Moretti | Electrodyne/Moretti | 7th |
| 13.4.1980 | 6 h Mugello | 32 | 935 | Zorzi / "Victor" / Schön | "Victor" | DNS |
| 13.4.1980 | 100 mile Road Atlanta | 32 | 934 | Chester Vincentz | Electrodyne Racing | 29th |
| 13.4.1980 | 6 h Mugello | 35 | 911 Carrera RSR | Pallavicini / Müller | Angelo Pallavicini | DNA |
| 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 | 39 | 934 | Zbinden / Kofel | Formel Rennsport Club, Zurich | DNA |
| 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] | 54 | 911 | Rene Ascona | Rene Ascona | DNA |
| 13.4.1980 | 100 mile Road Atlanta | 55 | 935 | Howard Meister | Meister Homes/Alan Johnson Racing | DNA |
| 13.4.1980 | Road Atlanta [GTU] | 57 | 914/4 | Wayne Baker | Personalized Autohaus | 12th |
| 13.4.1980 | 100 mile Road Atlanta | 59 | 935/79 | Peter Gregg | Brumos Porsche | 3rd |
| 13.4.1980 | 100 mile Road Atlanta | 63 | 911 Carrera RSR | Luis Mendez | Mendez Racing | 11th |
| 13.4.1980 | 100 mile Road Atlanta | 64 | 911 Carrera | Earle Moffitt | Earle Moffitt | DNA |
| 13.4.1980 | 100 mile Road Atlanta | 85 | 935 | Bruce Leven | Bruce Leven | 25th |
| 13.4.1980 | 100 mile Road Atlanta | 86 | 935/77A | Hurley Haywood | Hurley Haywood | 2nd |
| 13.4.1980 | 100 mile Road Atlanta | 89 | 911 Carrera RSR | Ernesto Soto | Hector Huerta Racing | 17th |
| 13.4.1980 | 100 mile Road Atlanta | 93 | 935 K3 | Don Whittington | Whittington Bros. Racing | DNS |
| 13.4.1980 | 100 mile Road Atlanta | 94 | 935 | Dale Whittington | Whittington Bros. Racing | 4th |
| 13.4.1980 | 100 mile Road Atlanta | 95 | 935 K3 | Bill Whittington | Whittington Bros. Racing | 1st |
| 13.4.1980 | DRM Hockenheim Jim Clark | | 911 Carrera RSR | Urs Schweizer | | DNF |
| 13.4.1980 | DRM Hockenheim Jim Clark | | 911 Carrera RSR | Roger Müller | | DNF |