| 9.5.1965 | USRRC-GT Laguna Seca | 3 | #018? | Briggs Cunningham | Briggs Cunningham | 10th |
| 9.5.1965 | USRRC-GT Laguna Seca | 31 | #087? | Dave Jordan | Otto Zipper | 4th |
| 9.5.1965 | USRRC-GT Laguna Seca | 32 | #093? | Scooter Patrick | Otto Zipper | 3rd |
| 9.5.1965 | USRRC-GT Laguna Seca | 34 | | Kurt Neumann | Steve Berg | 5th |
| 9.5.1965 | Targa Florio | 82 | | Maestrini / Rinaldi | Giancarlo Maestrini | DNF |
| 9.5.1965 | Targa Florio | 90 | #108 | Andrea Vianini | Porsche System Engineering | DNS |
| 9.5.1965 | Targa Florio | 94 | #005 | Pucci / Klass | Porsche System Engineering | 5th |
| 9.5.1965 | Targa Florio | 174 | #009 | Bonnier / Hill | Porsche System Engineering | 4th |
| 9.5.1965 | Targa Florio | 176 | #906-001 | Maglioli / Linge | Porsche System Engineering | 3rd |
| 9.5.1965 | Targa Florio | 182 | #906-008 | Davis / Mitter | Porsche System Engineering | 2nd |
| 9.5.1965 | Targa Florio | T | | Pucci / Klass | Porsche System Engineering | T-car |
| 9.5.1965 | DARM GT Nürburgring [GT2.5] | | | Franz-Urban Schoppe | | 8th |
| 9.5.1965 | Hansa-Pokal Nürburgring [Handicap] | | #037 | Manfred Abels | | 10th |
| 9.5.1965 | DARM GT Nürburgring [GT2.5] | | #028 | Rainer Ising | | 6th |
| 9.5.1965 | Hansa-Pokal Nürburgring [Handicap] | | #028 | Rainer Ising | | 12th |
| 9.5.1965 | DARM GT Nürburgring [GT2.5] | | #031 | Peter Ruby | | 5th |
| 9.5.1965 | Trofeo Juan Jover Montjuich | | #057? | Juan Fernandez | | 2nd |
| 9.5.1965 | USRRC-GT Laguna Seca | | | Jim Adams | PORGON | DNA |
| 9.5.1965 | USRRC-GT Laguna Seca | | | Bill Neal | B & H Racing | DNA |
| 9.5.1965 | DARM GT Nürburgring [GT2.5] | | #037 | Manfred Abels | | 3rd |
| 15.5.1965 | Mosport [S+1.3] | 58 | | Jacques Duval | Mr. Muffler | 4th |
| 16.5.1965 | 500 km Spa | 40 | #040 | "Eldé" | "Eldé" | 10th |
| 16.5.1965 | 500 km Spa | 41 | #055 | Ben Pon | Racing Team Holland | 3rd |
| 16.5.1965 | 500 km Spa | 42 | #023 | Rob Slotemaker | Racing Team Holland | DNF |
| 16.5.1965 | 500 km Spa | 43 | #063 | "Roy von Vost" | Roy Vost | DNF |
| 16.5.1965 | Redex Mallory Park [GT+1.6] | 95 | | John Morris | Mefco Racing Team | 3rd |
| 16.5.1965 | GP Roma Vallelunga [S2.0] | | #057 | Maurizio Grana | | 2nd |
| 16.5.1965 | Player's Pacific Westwood | | #042 | Mike Eyerly | | 1st |
| 22.5.1965 | Autosport Oulton Park [GT] | 133 | #097 | Martin Hone | Martin Hone | 5th |
| 23.5.1965 | Prix de Paris | 17 | #104 | Edmond Meert | | 8th |
| 23.5.1965 | Velodromloppet [GT+1.15] | 17 | | Sten Axelsson | Stockholms SVK | 1st |
| 23.5.1965 | 1000 km Nürburgring | 20 | #009 | Bonnier / Rindt | Porsche | 3rd |
| 23.5.1965 | 1000 km Nürburgring | 21 | #906-011 | Mitter / Davis | Porsche | 9th |
| 23.5.1965 | 1000 km Nürburgring | 21T | #906-003 | Mitter / Davis / Bonnier / Rindt | Porsche | T-car |
| 23.5.1965 | 1000 km Nürburgring | 22 | #906-012 | Nöcker / Klass | Porsche | 6th |
| 23.5.1965 | 1000 km Nürburgring | 23 | #906-001 | Maglioli / Linge | Porsche | 5th |
| 23.5.1965 | 1000 km Nürburgring | 23T | #906-005 | Maglioli / Linge | Porsche | T-car |
| 23.5.1965 | USRRC Bridgehampton | 34 | #013 | George Drolsom | | 13th |
| 23.5.1965 | USRRC Bridgehampton | 44 | #068 | Peter Gregg | | DNF |
| 23.5.1965 | 1000 km Nürburgring | 68 | #037 | Abels / Selbach | Scuderia Lufthansa | 14th |
| 23.5.1965 | 1000 km Nürburgring | 69 | #085 | Hawkins / De Udy | Don Moore | DNF |
| 23.5.1965 | 1000 km Nürburgring | 70 | #005 | Koch / Pon | Porsche | 25th |
| 23.5.1965 | 1000 km Nürburgring | 72 | #036 | Fischhaber / Schütz | Anton Fischhaber | 11th |
| 23.5.1965 | 1000 km Nürburgring | 74 | #028 | Degner / Kalkuhl | Bernd Degner | 21st |
| 23.5.1965 | 1000 km Nürburgring | 76 | | Peter Ruby | Peter Ruby | DNA |
| 23.5.1965 | 1000 km Nürburgring | 77 | #055? | Pon / Slotemaker | Racing Team Holland | DNA |
| 23.5.1965 | SCCA Regional Oregon [CM+DM+EM+FM+GM+AP+BP+CP] | | #042 | Mike Eyerly | | 4th |
| 23.5.1965 | Prix de Paris | | | Jean-Claude Sauer | | 9th |
| 29.5.1965 | Pepsi-Cola Mont-Tremblant | 7 | #055 | Ben Pon | Racing Team Holland | 2nd |
| 29.5.1965 | Pepsi-Cola Mont-Tremblant | 8 | #023 | David van Lennep | Racing Team Holland | 4th |
| 29.5.1965 | Mont-Tremblant [Production +1.6] | 58 | | Jacques Duval | Monsieur Muffler | DNA |
| 29.5.1965 | Pepsi-Cola Mont-Tremblant | 58 | | Jacques Duval | Monsieur Muffler | 6th |
| 30.5.1965 | SCCA Regional Santa Barbara [AP+BP] | 0 | | Norm Smith | Ludwig Spichtinger | DNA |
| 30.5.1965 | SCCA Regional Santa Barbara [AP+BP] | 31 | #018 | Briggs Cunningham | Briggs Cunningham | DNA |
| 30.5.1965 | SCCA Regional Santa Barbara [AP+BP] | 33 | #087 | Scooter Patrick | Precision Motors | DNS |
| 30.5.1965 | SCCA Regional Santa Barbara [AP+BP] | 34 | | Dave Jordan | Otto Zipper Motors | DNS |
| 30.5.1965 | SCCA Regional Santa Barbara [AP+BP] | 35 | | Bill Neal | Bill Neal | raced |
| 30.5.1965 | Zolder | | #028 | Rainer Ising | | 1st |
| 30.5.1965 | SCCA Regional Santa Barbara [AP+BP] | | | Kurt Neumann | | 2nd |
| 30.5.1965 | SCCA National Meadowdale [CM+DM+AP+BP] | | #013 | George Drolsom | | DNF |
| 30.5.1965 | SCCA National Meadowdale [EM+FM+GM] | | #013 | George Drolsom | | 3rd |
| 5.6.1965 | Player's 200 Mosport | 9 | #055 | Ben Pon | Racing Team of Holland | DNF |
| 5.6.1965 | Player's 200 Mosport | 10 | #023 | Rob Slotemaker | Racing Team of Holland | 9th |
| 5.6.1965 | Player's 200 Mosport | 58 | #014 | Jacques Duval | Jacques Duval | 13th |
| 6.6.1965 | Hill Climb Mont Ventoux | 44 | #906-011 | Gerhard Mitter | Porsche | 2nd |
| 6.6.1965 | Hill Climb Mont Ventoux | 45 | #082 | Anton Fischhaber | Porsche | 7th |
| 6.6.1965 | GP Mugello | 102 | | Alberto Bianchetti | Alberto Bianchetti | DNA |
| 6.6.1965 | GP Mugello | 104 | | Maestrini / Fabri | Otello Rinaldi | 8th |
| 6.6.1965 | GP Mugello | 105 | | Aldo Bruni | Aldo Bruni | DNA |
| 6.6.1965 | GP Mugello | 106 | #085 | Piper / De Udy | Don Moore | DNF |
| 6.6.1965 | Hill Climb Mont Ventoux | 197 | #005 | Herbert Müller | | 5th |
| 6.6.1965 | Hill Climb Mont Ventoux | | | Maxence Balas | | 10th |
| 6.6.1965 | Hill Climb Mont Ventoux | | | Martial Chevillon | | 19th |
| 6.6.1965 | Hill Climb Mont Ventoux | | | Jean Clement | | 13th |
| 6.6.1965 | Hill Climb Mont Ventoux | | | Abramo Zanardelli | | 22nd |
| 7.6.1965 | Autosport Snetterton [GT+1.6] | | | John Morris | | 2nd |
| 12.6.1965 | Autosport Oulton Park [GT] | 52 | #097 | Martin Hone | Mefco Racing | 5th |
| 13.6.1965 | Hill Climb Rossfeld | 2 | | Gerhard Mitter | Porsche System | T-car |
| 13.6.1965 | Hill Climb Rossfeld | 2T | #906-007 | Gerhard Mitter | Porsche System | 1st |
| 13.6.1965 | Hill Climb Rossfeld | 26 | #005 | Herbert Müller | Porsche System | 2nd |
| 13.6.1965 | Hill Climb Rossfeld | 27 | #036 | Udo Schütz | Udo Schütz | 8th |
| 13.6.1965 | Hill Climb Rossfeld | 28 | #102 | Rolf Stommelen | Rolf Stommelen | 6th |
| 13.6.1965 | Hill Climb Rossfeld | 29 | #026 | Michel Weber | Michel Weber | 5th |
| 13.6.1965 | Hill Climb Rossfeld | 30 | #064 | Sepp Greger | | 13th |
| 13.6.1965 | Hill Climb Rossfeld | 30 | | Abramo Zanardelli | Abramo Zanardelli | DNA |
| 13.6.1965 | Rose Cup Portland | | #042 | Mike Eyerly | | DNF |
| 19.6.1965 | Autosport Silverstone [GT+1.6] | 126 | | John Morris | | 5th |
| 20.6.1965 | SCCA Regional Pomona [AP+BP+CP] | 0 | | Norm Smith | M & S Engineering | DNA |
| 20.6.1965 | SCCA Regional Pomona [AP+BP+CP] | 32 | | Kurt Neumann | Steve Berg | DNA |
| 20.6.1965 | 24 h Le Mans | 32 | #906-001 | Linge / Nöcker | Porsche System Engineering | 4th |
| 20.6.1965 | 24 h Le Mans | 33 | #008 | Davis / Mitter | Porsche System Engineering | DNF |
| 20.6.1965 | 24 h Le Mans | 34 | #009 | Glemser / Klass / Nöcker / Koch | Porsche System Engineering | unused |
| 20.6.1965 | 24 h Le Mans | 35 | #906-012 | Klass / Glemser | Porsche System Engineering | DNF |
| 20.6.1965 | 24 h Le Mans | 36 | #091 | Koch / Fischhaber | Porsche System Engineering | 5th |
| 20.6.1965 | 24 h Le Mans | 37 | #021 | Pon / Buchet | A. Veuillet | DNF |
| 20.6.1965 | 24 h Le Mans | 38 | #041 | "Franc" / Kerguen | J. Franc | DNF |
| 20.6.1965 | 24 h Le Mans | 62 | #100 | Stommelen / Poirot | C. Poirot | DNF |
| 20.6.1965 | 24 h Le Mans | 66 | #079 | Calderari / Spoerry | Scuderia Filipinetti | DNA |
| 20.6.1965 | SCCA Regional Osceola | | #068 | Peter Gregg | | 1st |
| 27.6.1965 | GP Watkins Glen | 14 | #018 | Herb Wetanson | Herb Wetanson | 13th |