| 29.5.1978 | Lime Rock [GTU] | 01 | 911 S | Dave White | | 5th |
| 29.5.1978 | 100 mile Lime Rock | 07 | 911 Carrera RSR | Dave Cowart | Morrison's Inc. | 10th |
| 29.5.1978 | Lime Rock [GTU] | 27 | 911 S | Ray Mummery | | 8th |
| 29.5.1978 | 100 mile Lime Rock | 27 | 911 | Tom Sheehy | | 21st |
| 29.5.1978 | 100 mile Lime Rock | 28 | 935 | Clif Kearns | Desperado Racing | 8th |
| 29.5.1978 | 100 mile Lime Rock | 30 | 935 | Gianpiero Moretti | Electrodyne Inc. | 12th |
| 29.5.1978 | Lime Rock [GTU] | 34 | 911 S | George Drolsom | Drolsom Racing | 9th |
| 29.5.1978 | Lime Rock [GTU] | 42 | 911 S | Tom Ashby | | 12th |
| 29.5.1978 | Lime Rock [GTU] | 50 | 911 S | Fritz Hochreuter | Fritz Hochreuter | 11th |
| 29.5.1978 | Lime Rock [GTU] | 51 | 911 S | Robert Kirby | | 7th |
| 29.5.1978 | 100 mile Lime Rock | 55 | 911 Carrera RSR | Howard Meister | | 11th |
| 29.5.1978 | 100 mile Lime Rock | 60 | 911 | Ren Tilton | | 16th |
| 29.5.1978 | Lime Rock [GTU] | 60 | 911 S | Rusty Bond | | 6th |
| 29.5.1978 | Lime Rock [GTU] | 62 | 914/6 | Bill Koll | William Koll | 4th |
| 29.5.1978 | Lime Rock [GTU] | 64 | 911 S | Dennis Aase | | 2nd |
| 29.5.1978 | Lime Rock [GTU] | 77 | 911 | Pierre Honegger | | 17th |
| 4.6.1978 | Trans-Am Westwood | 02 | 914/6 | Bruce Sanders | Bruce Sanders | DNS |
| 4.6.1978 | Trans-Am Westwood | 7 | 935 | Ludwig Heimrath | Heimrath Racing | 1st |
| 4.6.1978 | Trans-Am Westwood | 13 | 935 | Hal Shaw, Jr. | Hal Shaw Racing | 2nd |
| 4.6.1978 | Trans-Am Westwood | 23 | 914/6 | Bob Zulkowski | Metal Craft Racing | 21st |
| 4.6.1978 | Trans-Am Westwood | 24 | 911 Carrera RSR | Tom Frank | Executive Industries | 20th |
| 4.6.1978 | Trans-Am Westwood | 26 | 911 S | Tom Masterson | Swag Engineering | 14th |
| 4.6.1978 | Trans-Am Westwood | 57 | 935 | Monte Shelton | Monte's Motors | DNS |
| 4.6.1978 | Trans-Am Westwood | 59 | 911 | Nick Feodorhoff | Performance Unlimited | DNS |
| 4.6.1978 | Trans-Am Westwood | 85 | 934/5 | Bruce Leven | Bayside Racing | 7th |
| 4.6.1978 | DARM Zolder | | 911 Carrera RS | Herbert Hechler | Müllerbräu-Valvoline-Racing | ?th |
| 4.6.1978 | DARM Zolder | | 930 | Horst Schmid | Autohaus Max-Moritz GmbH | ?th |
| 4.6.1978 | DARM Zolder | | 911 S | Manfred Anspann | Müllerbräu-Valvoline-Racing | ?th |
| 4.6.1978 | DARM Zolder | | 911 Carrera RSR | Erich Schiebler | Erich Schiebler | 1st |
| 4.6.1978 | DARM Zolder | | 930 | Hugo Nückel | Hugo Nückel | ?th |
| 4.6.1978 | DARM Zolder | | 911 Carrera RSR | Fritz Müller | Müllerbräu-Valvoline-Racing | ?th |
| 4.6.1978 | Ronde Cévenole | | 911 Carrera | Jacques Alméras | | 3rd |
| 4.6.1978 | Ronde Cévenole | | 911 Carrera | Henry Sain | | 8th |
| 4.6.1978 | Ronde Cévenole | | 911 Carrera | R. Lescure | | 7th |
| 4.6.1978 | Ronde Cévenole | | 911 Carrera | M. Enjalbert | | 19th |
| 11.6.1978 | Trans-Am Portland | 02 | 914/6 | Bruce Sanders | Bruce Sanders | 33rd |
| 11.6.1978 | 24 h Le Mans | 5 | 936/78 | Ickx / Pescarolo / Mass | Martini Racing Porsche System | DNF |
| 11.6.1978 | 24 h Le Mans | 6 | 936/78 | Ickx / Wollek / Barth | Martini Racing Porsche System | 2nd |
| 11.6.1978 | 24 h Le Mans | 7 | 936/77 | Haywood / Gregg / Jöst | Martini Racing Porsche System | 3rd |
| 11.6.1978 | Trans-Am Portland | 7 | 935 | Ludwig Heimrath | Heimrath Racing | 2nd |
| 11.6.1978 | Trans-Am Portland | 23 | 914/6 | Bob Zulkowski | Metal Craft Racing | 32nd |
| 11.6.1978 | Trans-Am Portland | 24 | 911 Carrera RSR | Tom Frank | Executive Industries | 9th |
| 11.6.1978 | 24 h Le Mans | 41 | 935 | Gomes / Amaral / Guaraná Menezes | A.S.A. Cachia-Team Pace | 7th |
| 11.6.1978 | 24 h Le Mans | 42 | 935/77A | Konrad / Merl | Konrad Racing | DNA |
| 11.6.1978 | 24 h Le Mans | 43 | 935/78 | Schurti / Stommelen | Martini Racing Porsche System | 8th |
| 11.6.1978 | 24 h Le Mans | 44 | 935/77A | Busby / Knoop / Cord | Porsche Kremer Racing | 6th |
| 11.6.1978 | 24 h Le Mans | 45 | 935 K2 | "Winter" / Schornstein / Gurdjian | Porsche Kremer Racing | NC |
| 11.6.1978 | 24 h Le Mans | 46 | 935/77A | Raymond / "Steve" / Franey | Porsche Kremer Racing | DNF |
| 11.6.1978 | 24 h Le Mans | 47 | 935/77A | Fitzpatrick / Hezemans | Weisberg Gelo Team | DNF |
| 11.6.1978 | Trans-Am Portland | 47 | 911 Carrera RSR | Bill Hanel | Hanel Racing | 3rd |
| 11.6.1978 | 24 h Le Mans | 48 | 935 | Müller / Haldi / "Nico" | Meccarillos Cégécol Racing Team | DNF |
| 11.6.1978 | Trans-Am Portland | 51 | 914/6 | Scott Taylor | | 17th |
| 11.6.1978 | Trans-Am Portland | 57 | 935 | Monte Shelton | Monte's Motors | 19th |
| 11.6.1978 | Trans-Am Portland | 59 | 911 | Nick Feodorhoff | Performance Unlimited | 27th |
| 11.6.1978 | 24 h Le Mans | 60 | 934 | de Lautour / Bleynie / Ennequin | Meccarillos Cégécol Racing Team | DNQ |
| 11.6.1978 | 24 h Le Mans | 61 | 934 | Chasseuil / Lefebvre | Auto Daniel Urcun | DNF |
| 11.6.1978 | 24 h Le Mans | 62 | 934 | Bussi / "Segolen" / Briavoine | "Ségolen" | 17th |
| 11.6.1978 | 24 h Le Mans | 63 | 911 Carrera RSR 3.0 | Gouttepifre / Touroul / Boubet | Christian Gouttepifre | DNQ |
| 11.6.1978 | 24 h Le Mans | 64 | 911 Carrera RSR | Bourdillat / Bernard / Favresse | Georges Bourdillat | NC |
| 11.6.1978 | 24 h Le Mans | 65 | 930 | Salamin / Vial / Courage / Laplacette | Joël Laplacette | DNF |
| 11.6.1978 | 24 h Le Mans | 66 | 911 Carrera RSR | Verney / Lapeyre / Servanin | Anny-Charlotte Verney | 12th |
| 11.6.1978 | 24 h Le Mans | 68 | 934 | Feitler / Dören / Poulain / Holup | Hervé Poulain | DNF |
| 11.6.1978 | 24 h Le Mans | 69 | 934 | Braillard / Ravenel / Ravenel / Dagoreau | Jean Louis Ravenel-V.S.D. | DNF |
| 11.6.1978 | Trans-Am Portland | 85 | 934/5 | Bruce Leven | Bayside Disposal Racing | 4th |
| 11.6.1978 | 24 h Le Mans | 90 | 935/77A | Redman / Paul / Barbour | Dick Barbour Racing | 5th |
| 11.6.1978 | 24 h Le Mans | 91 | 935/77A | Garretson / Akin / Earle | Dick Barbour Racing | DNF |
| 11.6.1978 | 24 h Le Mans | 92 | 934 | | Holly Cars L.S.A. | DNA |
| 11.6.1978 | 24 h Le Mans | 94 | 935/77A | Whittington / Whittington / Konrad | Whittington Brother Inc. Racing | DNF |
| 11.6.1978 | 24 h Le Mans | 97 | 911 Carrera RSR 3.0 | Spice / Rulon-Miller / Perkins | Charles Ivey Engineering | 14th |
| 11.6.1978 | 24 h Le Mans | 98 | 911 Carrera RS | Belliard / Perrier | Thierry Perrier | DNQ |
| 11.6.1978 | DARM Wunstorf | 402 | 934 | Hans Christian Jürgensen | Hans-Christian Jürgensen | 1st |
| 11.6.1978 | DARM Wunstorf | | 930 | Hugo Nückel | Hugo Nückel | ?th |
| 11.6.1978 | DARM Wunstorf | | 911 Carrera RSR 3.0 | Peter Pospieszczyk | Peter Pospieszczyk | 3rd |
| 11.6.1978 | DARM Wunstorf | | | Ingo Sepold | Ingo Sepold | 4th |
| 11.6.1978 | DARM Wunstorf | | 911 Carrera RSR | Fritz Müller | Müller-Bräu-Valvoline-Racing | ?th |
| 11.6.1978 | DARM Wunstorf | | | Willi Schulte | Willi Schulte | ?th |
| 11.6.1978 | CI Gr.4 Pergusa | | | Amodei | | 14th |
| 11.6.1978 | Gr.5 Pergusa | | 911 Carrera | Corrado | | 3rd |
| 11.6.1978 | Gr.5 Pergusa | | 911 Carrera | Pastorello | | 4th |
| 11.6.1978 | DARM Wunstorf | | | Herbert Hechler | Müller-Bräu-Valvoline-Racing | ?th |
| 11.6.1978 | DARM Wunstorf | | 911 S | Franz Gschwender | Müller-Bräu-Valvoline-Racing | ?th |
| 11.6.1978 | CI Gr.4 Pergusa | | 911 Carrera | Comito | | 10th |
| 11.6.1978 | CI Gr.4 Pergusa | | | Di Virgilio | | 2nd |
| 11.6.1978 | DARM Wunstorf | | | Erich Schiebler | Erich Schiebler | 2nd |
| 18.6.1978 | DRM Mainz-Finthen | 2 | 935/77A | Bob Wollek | Vaillant-Kremer-Team | 1st |
| 18.6.1978 | DRM Mainz-Finthen | 3 | 935/77A | Dieter Schornstein | Porsche-Kremer-Racing-Team | 7th |
| 18.6.1978 | DRM Mainz-Finthen | 4 | 935 K2 | "John Winter" | Porsche-Kremer-Racing-Team | DNF |
| 18.6.1978 | DRM Mainz-Finthen | 5 | 935/77A | Manfred Schurti | Jägermeister-Max-Moritz-Team | 4th |
| 18.6.1978 | DRM Mainz-Finthen | 6 | 935/77A | Toine Hezemans | Weisberg-Gelo-Team | 5th |
| 18.6.1978 | DRM Mainz-Finthen | 8 | 935/77A | John Fitzpatrick | Weisberg-Gelo-Team | 2nd |
| 18.6.1978 | DRM Mainz-Finthen | 9 | 935/77A | Klaus Ludwig | Weisberg-Gelo-Team | 3rd |
| 18.6.1978 | DRM Mainz-Finthen | 10 | 935/77A | Franz Konrad | Konrad-Racing | 6th |
| 18.6.1978 | DRM Mainz-Finthen | 16 | 935 | Volkert Merl | Konrad-Racing | DNF |
| 18.6.1978 | DRM Mainz-Finthen | 30 | 911 Carrera RSR | Klaus Böhm | Klaus Böhm | 10th |
| 18.6.1978 | DRM Mainz-Finthen | 31 | 911 Carrera RSR | Peter Schem | Peter Schem | 9th |
| 18.6.1978 | DRM Mainz-Finthen | 32 | 911 Carrera RSR | Georg Freiberger | Georg Freiberger | 11th |
| 18.6.1978 | Benelux Zandvoort | 73 | 935 | Claude Bourgoignie | | DNS |
| 18.6.1978 | Benelux Zandvoort | 74 | 935 | Henri van Oorschot | Henri van Oorschot | 1st |
| 18.6.1978 | Benelux Zandvoort | 75 | 935 | Toon Suykerbuyk | | raced |
| 18.6.1978 | SM Misano | | 911 Carrera RSR 3.0 | Edy Brandenberger | | ?th |