| 1984 · ADAC 1000 Kilometres, Nürburgring | 18 | 65 | GTX | Tuff Kote Dinol Racing | Jan Lundgardh · Kurt Simonsen | Porsche 935 L1 | — | 174 | WSPR historical record |
| 1984 · Rothmans Spa 1000 Kilometres, Spa | did_not_start | 65 | | Tuff-Kote Dinol Racing | Jan Lundgardh · Kurt Simonsen | Porsche 935 L1 | — | | WSPR historical record |
| 1982 · Trofeo Filippo Caracciolo, Monza | did_not_qualify | 92 | Gr.5 | Kenneth Leim | Kurt Simonsen · Kenneth Leim | BMW 320i | — | | WSPR historical record |
| 1982 · The Pace Petroleum 6 Hours, Silverstone | retired | 75 | Gr.5 | Kenneth Leim | Kenneth Leim · Kurt Simonsen | BMW 320i | — | 37 | WSPR historical record |
| 1982 · Rudolf Caracciola Wanderpreis 1000 Kilometres, Nürburgring | entry_only | 49 | Gr.5 | Kenneth Leim | Kenneth Leim · Kurt Simonsen | BMW 320i | — | | WSPR historical record |
| 1982 · Trophee Diners Club 1000 kilometres, Spa-Francorchamps | did_not_start | 69 | Gr.5 | Kenneth Leim | Kenneth Leim · Kurt Simonsen | BMW 320i | — | | WSPR historical record |
| 1982 · Trofeo Banca Toscana 1000 kilometres, Mugello | entry_only | 19 | Gr.5 | Kenneth Leim | Kenneth Leim · Kurt Simonsen | BMW 320i | — | | WSPR historical record |
| 1980 · Brands Hatch 6 Hours | 15 | 18 | 9. Gr.5 | Jan Lundgardh | Jan Lundgardh · Kurt Simonsen · Preben Kristoffersen | Porsche 935 L1 | — | 129 | WSPR historical record |
| 1980 · Silverstone 1000 | did_not_start | 47 | Gr.5 | Willy F Racing | Preben Kristoffersen · Kurt Simonsen | BMW 320i | — | | WSPR historical record |
| 1980 · Nürburgring 1000 Kilometres | 16 | 17 | 0. Gr.5 | Willy F Racing | Preben Kristoffersen · Kurt Simonsen | BMW 320i | — | 38 | WSPR historical record |
| 1979 · 6 Hours of Mugello | retired | 57 | Gr.5 | Kenneth Leim | Kenneth Leim · Kurt Simonsen | Porsche 934 | — | | WSPR historical record |
| 1979 · Dijon 6 Hours | 14 | 50 | 4. GT | Kenneth Leim | Kenneth Leim · Kurt Simonsen | Porsche 934 | — | 213 | WSPR historical record |
| 1979 · Rivet Supply 6 Hours, Silverstone | 8 | 14 | 4. GT | Kenneth Leim | Kenneth Leim · Kurt Simonsen | Porsche 934 | — | 197 | WSPR historical record |
| 1979 · 25th 1000 km Nürburgring | entry_only | 43 | GT | Kenneth Leim | Kenneth Leim · Kurt Simonsen | Porsche 934 | — | | WSPR historical record |
| 1979 · 19. Coppa Florio, Pergusa | entry_only | - | GT | Kenneth Leim | Kenneth Leim · Kurt Simonsen | Porsche 934 | — | | WSPR historical record |
| 1979 · 19. Coppa Florio, Pergusa | entry_only | - | Gr.5 | Kurt Simonsen | Mario Luini · Kurt Simonsen | Porsche Carrera RSR | — | | WSPR historical record |
| 1978 · 6 h Mugello | entry_only | 35 | Gr.5 | Vastkuststugan | Kurt Simonsen · Jan Lundgardh | Porsche 935 | — | | WSPR historical record |
| 1978 · 6 h Dijon | 9 | 36 | 2. GT | Kenneth Leim | Kurt Simonsen · Kenneth Leim | Porsche 934 | — | 147 | WSPR historical record |
| 1978 · 6 h Silverstone | 11 | 10 | 8. Gr.5 | Team Vastkuststugan | Kurt Simonsen · Jan Lundgardh | Porsche 935 2.0 | — | 187 | WSPR historical record |
| 1978 · 1000 km Nürburgring | 16 | 14 | 4. Gr.5 | Vastkuststugan | Kurt Simonsen · Jan Lundgardh | Porsche 935 | — | 39 | WSPR historical record |
| 1978 · Misano 6 Hours | retired | 24 | GT | Kenneth Leim | Kenneth Leim · Kurt Simonsen | Porsche 934 | — | 121 | WSPR historical record |
| 1978 · 6 h Vallelunga | did_not_start | 26 | Gr.5 | Vastkuststugan | Jan Lundgardh · Kurt Simonsen | Porsche 935 2.0 | — | | WSPR historical record |
| 1977 · 500 km Paul Ricard, Le Castellet | 13 | 40 | 1. GT | Kurt Simonsen | Kurt Simonsen · Kenneth Leim | Porsche Carrera RSR | — | 133 | WSPR historical record |
| 1977 · Kosset 6 Hours, Silverstone | 9 | 31 | 7. Gr.5 | Kenneth Leim | Kurt Simonsen · Kenneth Leim | Porsche Carrera RSR | — | 206 | WSPR historical record |
| 1977 · ADAC 1000 km Nürburgring | 9 | 18 | 8. Gr.5 | Kenneth Leim | Kurt Simonsen · Kenneth Leim | Porsche Carrera RSR | — | 40 | WSPR historical record |
| 1977 · Hessen Preis, Hockenheim | 15 | 50 | 6. GT | Jan Lundgardh | Jan Lundgardh · Kurt Simonsen | Porsche 911 | — | 135 | WSPR historical record |
| 1977 · 6 Ore di Vallelunga | retired | 39 | GT | — | Jan Lundgardh · Kurt Simonsen | Porsche Carrera | — | 20 | WSPR historical record |
| 1976 · March Trophy, Mugello 6 Hours | 5 | 22 | 4. Gr.5 | Kenneth Leim | Kenneth Leim · Kurt Simonsen | Porsche Carrera RSR | — | 157 | WSPR historical record |
| 1976 · Trofeo Ignazio Giunti, Vallelunga 6 Hours | 3 | 23 | 3. Gr.5 | Kenneth Leim | Kenneth Leim · Kurt Simonsen | Porsche Carrera RSR | — | 245 | WSPR historical record |
| 1976 · World Championship of Maker, 6 Hours of Silverstone | 7 | 31 | 2. GT | Kenneth Leim | Kurt Simonsen · Kenneth Leim | Porsche Carrera RSR | — | 189 | WSPR historical record |
| 1976 · ADAC 1000 Kilometres, Nürburgring | retired | 34 | Gr.5 | Kenneth Leim | Kurt Simonsen · Roland Larsson · Kenneth Leim | Porsche Carrera RSR | — | 13 | WSPR historical record |
| 1976 · Martha 1000, Zeltweg 6 Hours, Österreichring | retired | 26 | Gr.5 | Kenneth Leim | Kurt Simonsen · Kenneth Leim | Porsche Carrera RSR | — | 109 | WSPR historical record |
| 1976 · ACF 6 Hours Dijon | 12 | 65 | 0. Gr.5 | Kenneth Leim | Kurt Simonsen · Kenneth Leim | Porsche Carrera RSR | — | 276 | WSPR historical record |
| 1975 · Spa 1000 Kilometres, Spa-Francorchamps | retired | 46 | GT | Kuberol Racing | Bengt Ekberg · Kurt Simonsen | Porsche Carrera RSR | — | | WSPR historical record |
| 1975 · 1000 km Nürburgring | retired | 64 | GT+1.6 | Jan Lundgardh | Jan Lundgardh · Kurt Simonsen | Porsche Carrera RSR | — | 6 | WSPR historical record |
| 1974 · 1000-km-Rennen Nürburgring | retired | 55 | GT+1.6 | Kuberol Racing | Roland Larsson · Kurt Simonsen · Bengt Ekberg | Porsche Carrera RSR | — | 9 | WSPR historical record |
| 1974 · 1000 km Le Castellet | 11 | 56 | 4. GT | Kurt Simonsen | Kurt Simonsen · Bengt Ekberg | Porsche Carrera RSR | — | 109 | WSPR historical record |
| 1973 · ADAC 1000 Kilometres, Nürburgring | 15 | 50 | 5. GT+1.6 | Kuberol Racing | Bengt Ekberg · Kurt Simonsen · Roland Larsson | Porsche Carrer | — | 37 | WSPR historical record |
| 1972 · Monza 1000 Kilometres | did_not_qualify | 48 | GT+2.0 | Kuberol Racing | Roland Larsson · Bengt Ekberg · Kurt Simonsen | Porsche 911S | — | | WSPR historical record |
| 1972 · Spa 1000 Kilometres | entry_only | 44 | GT | Kurt Simonsen | Kurt Simonsen · Roland Larsson | Porsche 911T | — | | WSPR historical record |
| 1972 · ADAC 1000 Kilometres, Nürburgring | 20 | 83 | 3. GT2.0 | Kuberol Racing | Bengt Ekberg · Dick Bistrom · Kurt Simonsen | Porsche 911T | — | 36 | WSPR historical record |
| 1972 · ADAC 1000 Kilometres, Nürburgring | did_not_qualify | 71 | GT+2.0 | Kuberol Racing | Roland Larsson · Kurt Simonsen | Porsche 911S | — | | WSPR historical record |
| 1971 · Trofeo Filippo Caracciolo, Monza 1000 Kilometres | did_not_qualify | 66 | GT2.0 | Kurt Simonsen | Roland Larsson · Kurt Simonsen | Porsche 911 | — | | WSPR historical record |
| 1971 · Spa 1000 Kilometres | 10 | 44 | 2. GT2.0 | Kurt Simonsen | Roland Larsson · Kurt Simonsen | Porsche 911S | — | 53 | WSPR historical record |
| 1971 · ADAC 1000 Kilometres, Nürburgring | retired | 97 | GT+2.0 | Kurt Simonsen | Kurt Simonsen · Roland Larsson | Porsche 911T | — | 8 | WSPR historical record |
| 1965 · 500 km Nürburgring | entry_only | 97 | T850 | Kurt Simonsen | Kurt Simonsen | Saab 96 | — | | WSPR historical record |
| 1962 · III Int. ADAC 500 km Nürburgring | retired | 53 | T850 | Kurt Simonsen | Kurt Simonsen | Saab 96 | — | | WSPR historical record |