| 24.4.1966 | SM Knutstorp [SP2.0] | 1 | 906 | Sten Axelsson | Botkyrka MK | 2nd |
| 24.4.1966 | SM Knutstorp [GT2.0] | 6 | Roadster S | Knut Johansen | | DNA |
| 24.4.1966 | SM Knutstorp [GT2.0] | 11 | 911 | Kay Honkanen | | DNA |
| 24.4.1966 | Coupes de Vitesse | 15 | 904 GTS | "Roy von Vost" | | 5th |
| 24.4.1966 | Coupes de Vitesse | 19 | 906 | Annie Soisbault | | raced |
| 24.4.1966 | Las Vegas [AP+BP+CP+DP] | 33 | 904 GTS | Scooter Patrick | Otto Zipper | 1st |
| 24.4.1966 | USRRC Las Vegas | 34 | 906 | Ken Miles | Estes - Zipper Motor Co. | 6th |
| 24.4.1966 | SCCA Regional Shelton [Main] | | 904 GTS | Wade Carter | | DNS |
| 25.4.1966 | 1000 km Monza | 26 | 906 | Antonio Finiguerra | Scuderia Sant Ambroeus | DNA |
| 25.4.1966 | 1000 km Monza | 28 | 906 | Mitter / Herrmann | Porsche System Engineering | 4th |
| 25.4.1966 | 1000 km Monza | 29 | 906 | Davis / Glemser | Porsche System Engineering | 7th |
| 25.4.1966 | 1000 km Monza | 30 | 906 | Siffert / Vögele | Charles Vogele | 5th |
| 25.4.1966 | 1000 km Monza | 31 | 906 | Wicky / Knörr | André Wicky | 12th |
| 25.4.1966 | 1000 km Monza | 32 | 906 | de Udy / de Klerk | Mike De Udy | DNA |
| 25.4.1966 | 1000 km Monza | 33 | 906 | Koch / Schütz | Gerhard Koch | DNF |
| 25.4.1966 | 1000 km Monza | 34 | 906 | van Lennep / van Lennep | Racing Team Holland | DNA |
| 25.4.1966 | 1000 km Monza | 39 | 904 GTS | Barbuscia / Ridolfi | Turillo Barbuscia | DNF |
| 25.4.1966 | 1000 km Monza | 40 | 904 GTS | Weber / Neerpasch | Michael Weber | DNF |
| 25.4.1966 | 1000 km Monza | 41 | 904 GTS | Greger / Leinenweber | Sepp Greger | DNA |
| 30.4.1966 | Tourist Trophy | 36 | 906 | Peter de Klerk | Porsche Cars (GB) Ltd. | 6th |
| 30.4.1966 | DARM Trier [S+1.3] | 72 | 906 | Udo Schütz | Scuderia Lufthansa | 1st |
| 30.4.1966 | DARM Trier [S+1.3] | 77 | 906 | Gijs van Lennep | Racing Team Holland | 2nd |
| 30.4.1966 | DARM Trier [S+1.3] | 78 | 906 | David van Lennep | Racing Team Holland | 3rd |
| 30.4.1966 | DARM Trier [GT+1.3] | | 911 | Carl-Gregor Auer | | ?th |
| 30.4.1966 | SCCA Regional Thompson [Main] | | 356 | Jeff Murray | | ?th |
| 30.4.1966 | DARM Trier [GT+1.3] | | 911 | Günter Besier | | 1st |
| 30.4.1966 | DARM Trier [S+1.3] | | 904 GTS | Rolf Stommelen | | 4th |
| 30.4.1966 | DARM Trier [S+1.3] | | 904 GTS | Walter Lehmann | | 5th |
| 1.5.1966 | USRRC Riverside | 0 | 904 GTS | Norm Smith | | 12th |
| 1.5.1966 | SM Skarpnäck [SP2.0] | 1 | 906 | Sten Axelsson | Botkyrka MK | 1st |
| 1.5.1966 | SM Skarpnäck [SP2.0] | 2 | 906 | Ulf Norinder | KAK | 3rd |
| 1.5.1966 | SM Skarpnäck [GT2.0] | 6 | 356 Carrera | Kay Honkanen | | 8th |
| 1.5.1966 | SM Skarpnäck [GT2.0] | 7 | 356 Super 90 | Knut Johansen | | 12th |
| 1.5.1966 | SM Skarpnäck [GT2.0] | 9 | 356 B Super 90 GT | Sten Frohde | KAK/U | 7th |
| 1.5.1966 | SM Skarpnäck [GT2.0] | 11 | 356 Super 90 | Bengt Ekberg | KAK/U | 6th |
| 1.5.1966 | SM Skarpnäck [GT2.0] | 14 | 356 Carrera | Rolf Lundbom | Uppl. Väsby MK | 5th |
| 1.5.1966 | SM Skarpnäck [GT2.0] | 17 | 911 | Leif Hansen | Botkyrka MK | DNF |
| 1.5.1966 | SCCA National Virginia [AP+BP] | 26 | 904 GTS | Sam Posey | | DNS |
| 1.5.1966 | SCCA National Virginia [CP+DP] | 28 | 356 Carrera | Bob Bailey | | DNA |
| 1.5.1966 | USRRC Riverside | 33 | 906 | Scooter Patrick | Otto Zipper | 5th |
| 1.5.1966 | USRRC Riverside | 34 | 906 | Dave Jordan | Otto Zipper | DNF |
| 1.5.1966 | SCCA National Virginia [CP+DP] | 34 | 356 Carrera | John Kelly | | 2nd |
| 1.5.1966 | SCCA National Virginia [CSR+DSR+ESR+FSR+GSR] | 50 | 906 | Ed Hugus | Ed Hugus | DNA |
| 1.5.1966 | USRRC Riverside | 81 | 911 | Jerry Titus | | 14th |
| 1.5.1966 | SCCA National Virginia [CP+DP] | 177 | 356 Carrera | Bruce Jennings | | 1st |
| 1.5.1966 | SCCA National Newport [CP+DP+EP?] | | 356 | Larry Eyerly | | ?th |
| 1.5.1966 | SCCA National Newport [CP+DP+EP?] | | 356 Carrera | Dick Smith | | ?th |
| 3.5.1966 | GP Japan | 6 | 906 | Shintaro Taki | Shintaro Taki | DNF |
| 7.5.1966 | SCCA Regional Laguna Seca [CM+DM+EM+FM+GM] | 33 | | Jim Wellington | | DNA |
| 8.5.1966 | Velodromloppet [SP2.0] | 1 | 906 | Sten Axelsson | Botkyrka MK | 1st |
| 8.5.1966 | Velodromloppet [GT2.0] | 5 | | Knut Johansen | | DNA |
| 8.5.1966 | Velodromloppet [GT2.0] | 8 | 911 | Leif Hansen | Botkyrka MK | 1st |
| 8.5.1966 | Velodromloppet [SP2.0] | 9 | 906 | Ulf Norinder | KAK | 2nd |
| 8.5.1966 | Velodromloppet [GT2.0] | 9 | 356 B Super 90 GT | Sten Frohde | | DNA |
| 8.5.1966 | SCCA Regional Laguna Seca [AP+BP+CP+DP] | 12 | 904 GTS | Norm Smith | | DNA |
| 8.5.1966 | Velodromloppet [GT2.0] | 16 | | Rolf Lundbom | | DNA |
| 8.5.1966 | Velodromloppet [GT2.0] | 17 | 356 Super 90 | Bengt Ekberg | KAK/U | 5th |
| 8.5.1966 | 500 mile Brands Hatch | 22 | 904 GTS | Hone / Morris | Mefco Racing | DNF |
| 8.5.1966 | USRRC Laguna Seca | 33 | 906 | Scooter Patrick | | DNF |
| 8.5.1966 | USRRC Laguna Seca | 34 | 906 | Ken Miles | Otto Zipper | 5th |
| 8.5.1966 | Targa Florio | 48 | 356 C 1600 SC | Tarenghi / Pardi | Settecolli | 44th |
| 8.5.1966 | SCCA Regional Laguna Seca [AP+BP+CP+DP] | 51 | 356 Carrera | Forrest Young | Forest Young | DNA |
| 8.5.1966 | Targa Florio | 52 | 911 | Nicolas / Pellecuer | Jean-Loup Pellecuer | 31st |
| 8.5.1966 | Targa Florio | 56 | 911 | de Udy / de Klerk | Porsche Cars of Great Britain (A.F.N Ltd) | DNA |
| 8.5.1966 | Targa Florio | 58 | 911 | Rolando Tarenghi | | DNA |
| 8.5.1966 | Targa Florio | 60 | 911 | Ferlaino / Fabri | Corrado Ferlaino | 25th |
| 8.5.1966 | SCCA Regional Laguna Seca [AP+BP+CP+DP] | 71 | 356 Carrera | Dick Smith | | DNA |
| 8.5.1966 | USRRC Laguna Seca | 88 | | Jerry Titus | | DNA |
| 8.5.1966 | Targa Florio | 142 | 356 B 2000 GS Carrera 2 | Merendino / Lo Jacono | Alfonso Merendino | DNF |
| 8.5.1966 | Targa Florio | 144 | 906 | Arena / Pucci | Porsche System Engineering | 3rd |
| 8.5.1966 | Targa Florio | 146 | 904 GTS | Barbuscia / Ridolfi | Turillo Barbuscia | DNF |
| 8.5.1966 | Targa Florio | 148 | 906 | Mairesse / Müller | Scuderia Filipinetti/Porsche System | 1st |
| 8.5.1966 | Targa Florio | 150 | 906 | Bourillot / Maglioli | Scuderia Filipinetti | 5th |
| 8.5.1966 | Targa Florio | 152 | 906 | Spoerry / Bungener | Scuderia Filipinetti | DNF |
| 8.5.1966 | Targa Florio | 154 | 906 | Kühnis / Walter | Ecurie Basilisk | 15th |
| 8.5.1966 | Targa Florio | 156 | 906 | Capuano / Latteri | Scuderia Pegaso | 8th |
| 8.5.1966 | Targa Florio | 200 | 906 | Herrmann / Glemser | Porsche System Engineering | DNF |
| 8.5.1966 | Targa Florio | 218 | 906 E | Mitter / Bonnier | Porsche System Engineering | DNF |
| 8.5.1966 | Targa Florio | 220 | 906 | de Udy / de Klerk | Porsche Cars of Great Britain (A.F.N Ltd) | DNF |
| 8.5.1966 | Targa Florio | 224 | 906-8 | Klass / Davis | Porsche System Engineering | 42nd |
| 8.5.1966 | Hansa-Pokal Nürburgring | 902 | 906 | Udo Schütz | | 1st |
| 8.5.1966 | Hansa-Pokal Nürburgring | 905 | 906 | Sepp Greger | Sepp Greger | 2nd |
| 8.5.1966 | Targa Florio | T | 904/6 | Arena / Pucci / Mitter / Bonnier / Herrmann / Glemser | Porsche System Engineering | T-car |
| 8.5.1966 | Targa Florio | T | 906 | Mitter / Bonnier / Herrmann / Glemser / Arena / Pucci | Porsche System Engineering | T-car |
| 8.5.1966 | USRRC Laguna Seca | | 904 GTS | Norm Smith | | DNF |
| 8.5.1966 | Hansa-Pokal Nürburgring | | 904 GTS | Rolf Stommelen | | 3rd |
| 8.5.1966 | Hansa-Pokal Nürburgring | | 911 | Franz G. Meyer | | 6th |
| 8.5.1966 | Hansa-Pokal Nürburgring | | 356 C 1600 SC | Erhard Sailer | | 5th |
| 8.5.1966 | Hansa-Pokal Nürburgring | | 911 | Jost Neumann | | DNF |
| 15.5.1966 | GP Paris [SP] | 42 | 906 | Gijs van Lennep | Racing Team Holland | 1st |
| 15.5.1966 | SCCA National Cumberland [CSR+DSR+ESR+FSR] | 50 | 906 | Ed Hugus | | 4th |
| 15.5.1966 | SCCA National Cumberland [CSR+DSR+ESR+FSR] | 79 | 718 RSK | Fred Touchton | Fred Touchton | 9th |
| 15.5.1966 | GP Paris [GT] | | 911 | Fritz Leinenweber | | 3rd |
| 15.5.1966 | Mittelrhein Nürburgring | | | Walter Baumann | | 1st |
| 15.5.1966 | GP Paris [SP] | | 906 | Charles Vögele | Charles Vögele | 3rd |
| 15.5.1966 | GP Paris [SP] | | 906 | Gerhard Koch | | 4th |
| 15.5.1966 | Junioren Trophy Zandvoort | | 356 B | Rudolf Greiwing | | ?th |
| 15.5.1966 | Junioren Trophy Zandvoort | | 356 C 1600 SC | Helmut Pilz | | ?th |
| 15.5.1966 | Mittelrhein Nürburgring | | | Theo Süß | | 3rd |
| 15.5.1966 | SCCA National Savannah | | 906 | Peter Gregg | | ?th |