| 1982 · 1982 24 Hours of Le Mans | DNF | 86 | IMSA GTO | BF Goodrich | Manfred Schurti · Patrick BedardManfred Schurti Patrick Bedard Paul Miller | Porsche 924 Carrera GTR | Porsche 2.0L S4 turbo | 128 | Wikipedia contributors · CC BY-SA 4.0 |
| 1981 · 1981 24 Hours of Le Mans | 11 | 36 | IMSA GTO | Porsche System | Manfred Schurti · Andy RouseManfred Schurti Andy Rouse | Porsche 924 Carrera GTR | Porsche 2.0L S4 turbo | 316 | Wikipedia contributors · CC BY-SA 4.0 |
| 1980 · 1980 24 Hours of Le Mans | 6 | 4 | LM GTP | Porsche System | Jürgen Barth · Manfred SchurtiJürgen Barth Manfred Schurti | Porsche 924 Carrera GT Turbo | Porsche 2.0 L S4 turbo | 317 | Wikipedia contributors · CC BY-SA 4.0 |
| 1980 · 19th Annual 24 Hour Pepsi Challenge, Daytona International Speedweay | 29 | 6 | 9. GTX | Dick Barbour Racing | John Fitzpatrick · Manfred Schurti · Dick Barbour | Porsche 935 K3 Tur | — | 405 | WSPR historical record |
| 1980 · Nürburgring 1000 Kilometres | 5 | 3 | 3. Gr.5 | Gelo Racing | Bob Wollek · Manfred Schurti | Porsche 935 | — | 44 | WSPR historical record |
| 1979 · 1979 24 Hours of Le Mans | DNF | 36 | Gr.5 SP | Gelo Sportswear International | Manfred Schurti · Hans HeyerManfred Schurti Hans Heyer | Porsche 935/77A | Porsche 3.0L F6 turbo | 201 | Wikipedia contributors · CC BY-SA 4.0 |
| 1979 · 18th Annual 24 Hour Pepsi Challenge, Daytona International Speedway | 50 | 2 | 2. GTX | Gelo Racing Team | Manfred Schurti · John Fitzpatrick · Bob Wollek | Porsche 935/77 | — | 135 | WSPR historical record |
| 1979 · 6 Hours of Mugello | 1 | 12 | 1. Gr.5 | Gelo Racing Team | John Fitzpatrick · Manfred Schurti · Bob Wollek | Porsche 935-77 | — | 138 | WSPR historical record |
| 1979 · 6 Hours of Mugello | 2 | 11 | 2. Gr.5 | Gelo Racing Team | Bob Wollek · Jacky Ickx · Manfred Schurti | Porsche 935-77A | — | 136 | WSPR historical record |
| 1979 · Dijon 6 Hours | 2 | 1 | 1. Gr.5 | Gelo Racing | Jacky Ickx · Bob Wollek · Manfred Schurti | Porsche 935/77 | — | 251 | WSPR historical record |
| 1979 · Dijon 6 Hours | 13 | 10 | 7. Gr.5 | Gelo Racing Team | Manfred Schurti · John Fitzpatrick · Bob Wollek | Porsche 935/77 | — | 215 | WSPR historical record |
| 1979 · Rivet Supply 6 Hours, Silverstone | 5 | 2 | 3. Gr.5 | Gelo Racing Team | Manfred Schurti · Bob Wollek · John Fitzpatrick | Porsche 935/77 | — | 210 | WSPR historical record |
| 1979 · 25th 1000 km Nürburgring | 1 | 6 | 1. Gr.5 | Gelo Racing Team | Manfred Schurti · John Fitzpatrick · Bob Wollek | Porsche 935/77 | — | 44 | WSPR historical record |
| 1979 · 25th 1000 km Nürburgring | 26 | 3 | 0. Gr.5 | Gelo Racing Team | Bob Wollek · John Fitzpatrick · Manfred Schurti · DNS - Henri Pescarolo | Porsche 935/7 | — | 31 | WSPR historical record |
| 1979 · Rivet Suply 6 hours, Brands Hatch | entry_only | 25 | Gr.5 | Gelo Racing | John Fitzpatrick · Manfred Schurti · Bob Wollek | Porsche 935/77A | — | | WSPR historical record |
| 1979 · Rivet Suply 6 hours, Brands Hatch | entry_only | 26 | Gr.5 | Gelo Racing | John Fitzpatrick · Manfred Schurti · Bob Wollek | Porsche 935/77A | — | | WSPR historical record |
| 1978 · 1978 24 Hours of Le Mans | 8 | 43 | Gr.5 SP | Martini Racing Porsche System | Rolf Stommelen · Manfred SchurtiRolf Stommelen Manfred Schurti | Porsche 935-78 | Porsche 935/79 3.2L F6 twin-turbo | 326 | Wikipedia contributors · CC BY-SA 4.0 |
| 1978 · 17th Annual 24 Hours of Daytona Camel GT Challenge | 2 | 6 | 2. GTX | Dick Barbour Racing | Dick Barbour · Manfred Schurti · Johnny Rutherford | Porsche 935/77 | — | 650 | WSPR historical record |
| 1978 · 1000 km Nürburgring | 2 | 8 | 2. Gr.5 | Max Moritz | Manfred Schurti · Jacky Ickx | Porsche 935/77 | — | 44 | WSPR historical record |
| 1978 · Watkins Glen 6 Hours/Trans-Am Championship, Watkins Glen Grand Prix C ircuit | 2 | 90 | 2. Gr.5 | Barbour Performance | Rolf Stommelen · Manfred Schurti · Dick Barbour | Porsche 935/77 | — | 146 | WSPR historical record |
| 1978 · 6 h Vallelunga | retired | 1 | Gr.5 | Martini Racing | Jacky Ickx · Manfred Schurti | Porsche 935/78 | — | 259 | WSPR historical record |
| 1977 · 1977 24 Hours of Le Mans | DNF | 41 | Gr.5 SP | Martini Racing Porsche System | Rolf Stommelen · Manfred SchurtiRolf Stommelen Manfred Schurti | Porsche 935-77 | Porsche Type-935 2.9L F6 twin-turbo | 52 | Wikipedia contributors · CC BY-SA 4.0 |
| 1977 · 6 h Mugello | 1 | 2 | 1. Gr.5 | Martini Racing | Rolf Stommelen · Manfred Schurti | Porsche 935 | — | 161 | WSPR historical record |
| 1977 · ADAC 1000 km Nürburgring | 6 | 7 | 6. Gr.5 | Autohaus Max Moritz | Manfred Schurti · Helmut Kelleners · DNS - Jürgen Barth | Porsche 935 | — | 41 | WSPR historical record |
| 1977 · Molson Diamond Trans-Am Championship and World Championship of Makes, Mosport Park | 21 | 1 | Gr.5 | Martini Racing | Jacky Ickx · Manfred Schurti | Porsche 935/77 | — | 34 | WSPR historical record |
| 1977 · Rivet Supply 6 Hours, Brands Hatch | 2 | 7 | 2. Gr.5 | Max Moritz | Manfred Schurti · Edgar Dören | Porsche 935 | — | 101 | WSPR historical record |
| 1977 · Hessen Preis, Hockenheim | retired | 1 | Gr.5 | Martini Racing | Jacky Ickx · Manfred Schurti | Porsche 935/77 | — | 156 | WSPR historical record |
| 1976 · 1976 24 Hours of Le Mans | 4 | 40 | Gp.5 SP | Martini Racing Porsche System | Rolf Stommelen · Manfred SchurtiRolf Stommelen Manfred Schurti | Porsche 935 | Porsche 3.0L F6 turbo | 331 | Wikipedia contributors · CC BY-SA 4.0 |
| 1976 · World Championship of Maker, 6 Hours of Silverstone | retired | 51 | T | Toyota Switerland | Manfred Schurti · Walter Frey · Paul Keller | Toyota Celica | — | 83 | WSPR historical record |
| 1976 · ADAC 1000 Kilometres, Nürburgring | retired | 1 | Gr.5 | Martini Racing | Rolf Stommelen · Manfred Schurti | Porsche 935 | — | 9 | WSPR historical record |
| 1976 · Martha 1000, Zeltweg 6 Hours, Österreichring | retired | 3 | Gr.5 | Egon Evertz KG | Leo Kinnunen · Manfred Schurti · Egon Evertz | Porsche 934/5 | — | 112 | WSPR historical record |
| 1976 · Martha 1000, Zeltweg 6 Hours, Österreichring | retired | 1 | Gr.5 | Martini Racing | Jacky Ickx · Manfred Schurti | Porsche 935 | — | 83 | WSPR historical record |
| 1976 · 6 Hours of Watkins Glen World Championship of Makes and SCCA Trans-Am Championship | 1 | 4 | 1. Gr.5 | Martini Racing | Rolf Stommelen · Manfred Schurti · DNS - Jochen Mass | Porsche 935 | — | 174 | WSPR historical record |
| 1976 · ACF 6 Hours Dijon | 3 | 3 | 3. Gr.5 | Martini Racing | Manfred Schurti · Rolf Stommelen | Porsche 935 | — | 304 | WSPR historical record |
| 1975 · 1975 24 Hours of Le Mans | 5 | 58 | GTS | Gelo Racing Team | Gijs van Lennep · John Fitzpatrick · Manfred Schurti · Toine HezemansGijs van Lennep John Fitzpatrick Manfred Schurti Toine Hezemans | Porsche 911 Carrera RSR | Porsche 3.0L F6 | 316 | Wikipedia contributors · CC BY-SA 4.0 |
| 1975 · 1975 24 Hours of Le Mans | DNF | 60 | GTS | Gelo Racing Team | Toine Hezemans · Manfred SchurtiToine Hezemans Manfred Schurti | Porsche 911 Carrera RSR | Porsche 3.0L F6 | 41 | Wikipedia contributors · CC BY-SA 4.0 |
| 1975 · 1000 km Mugello (150 laps) | 9 | 44 | 1. GT | Gelo Racing Team | Manfred Schurti · Toine Hezemans · John Fitzpatrick · DNS - Franz Pesch · DNS - Georg Loos | Porsche Carrera RSR | — | 134 | WSPR historical record |
| 1975 · 1000 km Mugello (150 laps) | 11 | 45 | 3. GT | Gelo Racing Team | John Fitzpatrick · Toine Hezemans · Manfred Schurti | Porsche Carrera RSR | — | 133 | WSPR historical record |
| 1975 · Trofeo F. Carraciolo, Monza | 6 | 77 | 5. S3.0 | Gelo Racing Team | Toine Hezemans · Manfred Schurti · John Fitzpatrick | Porsche Carrera RSR | — | 159 | WSPR historical record |
| 1975 · Trofeo F. Carraciolo, Monza | 7 | 78 | 6. S3.0 | Gelo Racing Team | John Fitzpatrick · Toine Hezemans · Manfred Schurti | Porsche Carrera RSR | — | 158 | WSPR historical record |
| 1975 · Spa 1000 Kilometres, Spa-Francorchamps | 11 | 44 | 6. GT | Gelo Racing Team | John Fitzpatrick · Manfred Schurti · Tim Schenken · DNS - Toine Hezemans | Porsche Carrera RSR | — | 45 | WSPR historical record |
| 1975 · 1000 km Nürburgring | 9 | 51 | 2. GT+1.6 | Gelo Racing Team | John Fitzpatrick · Toine Hezemans · Manfred Schurti | Porsche Carrera RS | — | 40 | WSPR historical record |
| 1975 · 1000 km Nürburgring | retired | 53 | GT+1.6 | Gelo Racing Team | Manfred Schurti · Klaus Ludwig · DNS - Claude Ballot-Léna | Porsche Carrera RSR | — | 27 | WSPR historical record |
| 1974 · 1974 24 Hours of Le Mans | DNF | 21 | S 3.0 | Martini Racing Porsche System | Helmut Koinigg · Manfred SchurtiHelmut Koinigg Manfred Schurti | Porsche 911 Carrera RSR Turbo | Porsche 2.1L F6 Turbo | 87 | Wikipedia contributors · CC BY-SA 4.0 |
| 1974 · 1000-km-Rennen Nürburgring | 7 | 9 | 7. S3.0 | Martini Racing Team | Manfred Schurti · Helmuth Koinigg · DNS - Herbert Müller | Porsche Car | — | 30 | WSPR historical record |
| 1974 · 1000 km Imola | retired | 7 | S3.0 | Martini Racing Team | Manfred Schurti · Helmuth Koinigg · DNS - Herbert Müller | Porsche Car | — | 133 | WSPR historical record |
| 1974 · 1000 km Zeltweg, Österreichring | retired | 8 | S3.0 | Martini Racing Team | Helmuth Koinigg · Manfred Schurti | Porsche Ca | — | 33 | WSPR historical record |
| 1974 · Brands Hatch BA 1000 Kilometres | 11 | 55 | 1. GT | Gelo Racing | John Fitzpatrick · Toine Hezemans · Manfred Schurti | Porsche Carrer | — | 200 | WSPR historical record |
| 1974 · Brands Hatch BA 1000 Kilometres | 13 | 54 | 2. GT | Gelo Racing | Arturo Merzario · Manfred Schurti · John Fitzpatrick · DNS - Stuart Graham | Porsche Carrera RSR | — | 197 | WSPR historical record |
| 1973 · Monza 1000 Kilometres | retired | 82 | S3.0 | Martini Racing Team | George Follmer · Manfred Schurti | Porsche Car | — | 19 | WSPR historical record |
| 1973 · Austrian 1000 Kilometres, Österreichring, Zeltweg | 9 | 8 | 9. S3.0 | Martini Racing Team | Helmuth Koinigg · Manfred Schurti · DNS - Herbert Müller | Porsche Carrer | — | 148 | WSPR historical record |
| 1972 · ADAC 1000 Kilometres, Nürburgring | did_not_qualify | 100 | T+2.0 | Daimler-Benz | Hans Heyer · Manfred Schurti · Thomas Betzler | Mercedes-Benz 300SEL | — | | WSPR historical record |