| 27.7.2003 | 2 h 45 min Sonoma | 33 | 996 GT3-RS | Lally / Pumpelly | ZIP Racing | 32nd |
| 27.7.2003 | 2 h 45 min Sonoma | 39 | 996 GT3-RS | Kapudija / Sherman | ZIP Racing | DNA |
| 27.7.2003 | 2 h 45 min Sonoma | 52 | 996 GT3-RS | Collin / Burgess | Seikel Motorsport | DNA |
| 27.7.2003 | 2 h 45 min Sonoma | 60 | 996 GT3-R | Davison / Liddell | P.K. Sport | 29th |
| 27.7.2003 | 2 h 45 min Sonoma | 61 | 996 GT3-R | Rice / Alexander | P.K. Sport | 26th |
| 27.7.2003 | 2 h 45 min Sonoma | 68 | 996 GT3-RS | Bunting / Gleason | The Racer's Group | 28th |
| 3.8.2003 | British GT Rockingham | 9 | 996 GT2 Bi-Turbo | Hindley / Berridge | Gruppe M/Tech 9 Motorsport | unused |
| 3.8.2003 | Special GT Cup Fuji | 10 | 996 GT3-R | "Osamu" / Furuya | Team LeyJun | 29th |
| 3.8.2003 | 3 h Trois-Rivières | 23 | 996 GT3-RS | Maassen / Luhr | Alex Job Racing | 9th |
| 3.8.2003 | 3 h Trois-Rivières | 24 | 996 GT3-RS | Bernhard / Bergmeister | Alex Job Racing | 23rd |
| 3.8.2003 | Special GT Cup Fuji | 24 | 996 GT3-R | Yogo / Asai | Team Taisan Jr. | 24th |
| 3.8.2003 | Special GT Cup Fuji | 26 | 996 GT3-RS | Yamaji / Nishizawa | Team Taisan Advan | 18th |
| 3.8.2003 | 3 h Trois-Rivières | 33 | 996 GT3-RS | Pumpelly / Lally | ZIP Racing | 16th |
| 3.8.2003 | 3 h Trois-Rivières | 39 | 996 GT3-RS | Ivankovich / Kapudija | ZIP Racing | DNA |
| 3.8.2003 | 3 h Trois-Rivières | 43 | 996 GT3-RS | Baron / Lieb | Orbit Racing | 19th |
| 3.8.2003 | 3 h Trois-Rivières | 60 | 996 GT3-R | Davison / Liddell | P.K. Sport | 28th |
| 3.8.2003 | Special GT Cup Fuji | 61 | 996 GT3-R | Katsumata / Ihara | R&D Sports | 31st |
| 3.8.2003 | 3 h Trois-Rivières | 61 | 996 GT3-R | Rice | P.K. Sport | 27th |
| 3.8.2003 | 3 h Trois-Rivières | 66 | 996 GT3-RS | Wagner / Buckler | The Racer's Group | 24th |
| 3.8.2003 | 3 h Trois-Rivières | 67 | 996 GT3-RS | Schrom | The Racer's Group | 29th |
| 3.8.2003 | 3 h Trois-Rivières | 68 | 996 GT3-RS | Gleason / Bunting | The Racer's Group | 21st |
| 3.8.2003 | Special GT Cup Fuji | 69 | 996 GT3-R | Yamagishi / Itaka | Team Gaikokuya | 28th |
| 3.8.2003 | Special GT Cup Fuji | 70 | 996 GT3-R | Ishibashi / Wada | Team Gaikokuya | 34th |
| 3.8.2003 | British GT Rockingham | 76 | 996 GT3 Cup | Pearce / Griffin | Gruppe M/Tech 9 Motorsport | 7th |
| 3.8.2003 | British GT Rockingham | 77 | 996 GT3 Cup | Halliday / Shrimpton | Gruppe M/Tech 9 Motorsport | 8th |
| 3.8.2003 | 3 h Trois-Rivières | 79 | 996 GT3-RS | Jackson / Murry | J-3 Racing, Inc. | 14th |
| 3.8.2003 | 3 h Trois-Rivières | 89 | 996 GT3-RS | Bader / Negri | Inline Cunningham Racing | 17th |
| 3.8.2003 | Special GT Cup Fuji | 111 | 996 GT3-R | Iijima / Haga | Arktech Motorsports | 32nd |
| 3.8.2003 | Special GT Cup Fuji | 910 | 996 GT3-R | Hirakawa / Miyagawa | 910 Racing | 26th |
| 3.8.2003 | Special GT Cup Fuji | 911 | 996 GT3-RS | Takamizawa / Sunako | 910 Racing | 30th |
| 8.8.2003 | 250 mile Watkins Glen | 6 | 911 GT1 | Jeannette / Newman / Petty | Gunnar Racing | 8th |
| 8.8.2003 | 250 mile Watkins Glen | 39 | 996 GT3-R | Vance / Stevenson | Stevenson Motorsports/Auto Assets | 10th |
| 8.8.2003 | 250 mile Watkins Glen | 71 | 996 GT3-R | White | Auto Assets/PAP-Parts.com | 25th |
| 8.8.2003 | 250 mile Watkins Glen | 72 | 996 GT3 Cup | Jack Lewis | Jack Lewis Enterprises | DNA |
| 8.8.2003 | 250 mile Watkins Glen | 83 | 996 GT3-RS | Neiman / van Overbeek | Rennwerks Motorsports | DNA |
| 8.8.2003 | 250 mile Watkins Glen | 84 | 996 GT3-RS | Hupfer / Mortimer | Acme Motorsport | DNA |
| 8.8.2003 | 250 mile Watkins Glen | 98 | 996 GT3-RS | Schumacher / Snow | Schumacher Racing | DNA |
| 8.8.2003 | 250 mile Watkins Glen | 99 | 996 GT3-RS | Nelson / Greenberg / Lisa | NETTTS Racing | DNA |
| 8.8.2003 | 250 mile Watkins Glen | 118 | 996 GT3 Cup | Levitas / Pobst | TPC Racing | 18th |
| 8.8.2003 | 250 mile Watkins Glen | 123 | 996 GT3 Cup | Littlechild / Pobst | TPC Racing | 13th |
| 17.8.2003 | SM GTR Gellerasen | 1 | 996 GT3-RS | Gustavsson / Nyström | Podium Racing | 2nd/4th |
| 17.8.2003 | SM GTR Gellerasen | 4 | 996 GT3 | Koit Veertee | Koit Veertee | DNS/7th |
| 17.8.2003 | SM GTR Gellerasen | 5 | 993 GT3 | Claés Lund | Lund Motorsport | DNS/5th |
| 17.8.2003 | SM GTR Gellerasen | 6 | 996 GT3-RS | Bernard Löhr | Team Löhr Racing | DNF/DNS |
| 17.8.2003 | 2 h 45 min Mosport | 23 | 996 GT3-RS | Maassen / Luhr | Alex Job Racing | 12th |
| 17.8.2003 | 2 h 45 min Mosport | 24 | 996 GT3-RS | Bergmeister / Bernhard | Alex Job Racing | 9th |
| 17.8.2003 | 2 h 45 min Mosport | 33 | 996 GT3-RS | Pumpelly / Lally | ZIP Racing | DNA |
| 17.8.2003 | SM GTR Gellerasen | 33 | 993 Carrera RSR | Anders Roos | Anders Roos | 5th/6th |
| 17.8.2003 | 2 h 45 min Mosport | 39 | 996 GT3-RS | Sherman / Kapudija | ZIP Racing | DNA |
| 17.8.2003 | 2 h 45 min Mosport | 43 | 996 GT3-RS | Lieb / Baron | Orbit Racing | 11th |
| 17.8.2003 | 2 h 45 min Mosport | 52 | 996 GT3-RS | Burgess / Shep | Seikel Motorsport | 29th |
| 17.8.2003 | 2 h 45 min Mosport | 60 | 996 GT3-R | Liddell / Rice | PK Sport | 13th |
| 17.8.2003 | 2 h 45 min Mosport | 61 | 996 GT3-R | Graham / Masarati | PK Sport | 23rd |
| 17.8.2003 | 2 h 45 min Mosport | 66 | 996 GT3-RS | Wagner | The Racer's Group | 32nd |
| 17.8.2003 | 2 h 45 min Mosport | 67 | 996 GT3-RS | Schrom / Pabst | The Racer's Group | 21st |
| 17.8.2003 | 2 h 45 min Mosport | 68 | 996 GT3-RS | Bunting / Gleason | The Racer's Group | 18th |
| 17.8.2003 | British GT Thruxton | 76 | 996 GT3 Cup | Pearce / Griffin | GruppeM/Tech 9 Motorsport | 8th |
| 17.8.2003 | British GT Thruxton | 77 | 996 GT3 Cup | Shrimpton / Halliday | GruppeM/Tech 9 Motorsport | 11th |
| 17.8.2003 | 2 h 45 min Mosport | 79 | 996 GT3-RS | Jackson / Murry | J-3 Racing, Inc. | 15th |
| 17.8.2003 | 2 h 45 min Mosport | 89 | 996 GT3-RS | Bader / Negri | Inline Cunningham Racing | DNA |
| 24.8.2003 | 24 h Zolder | 3 | 996 Bi-Turbo | Wauters / Bruynoghe / Wauters / Vanierschot | AD Sport | 3rd |
| 24.8.2003 | 24 h Zolder | 6 | 996 Bi-Turbo | Meulders / Geboers / Neyens / Jacobs | Sport Promoteam Racing | DNF |
| 24.8.2003 | Euro GT Spa | 6 | 993 GT2 | André Wilke | André Wilke | DNF/5th |
| 24.8.2003 | 24 h Zolder | 7 | 996 Bi-Turbo | Vancraeynest / Janssen / Daelemans | Ham Car Tuning | DNF |
| 24.8.2003 | Euro GT Spa | 7 | 993 GT2 Evo | Chaouki Chikhani | Team CC Racing | - |
| 24.8.2003 | 24 h Zolder | 8 | 993 Bi-Turbo | van Dyck / Raus / Moonen / Raus | Ham Car Tuning | DNF |
| 24.8.2003 | 24 h Zolder | 12 | 993 | Kurris / De Vos / Meuwissen / Van der Made | H&M Racing | 22nd |
| 24.8.2003 | Euro GT Spa | 12 | 993 GT2 Evo | Maciej Stanco | Star-Moto-RacingTeam | - |
| 24.8.2003 | 24 h Zolder | 14 | 996 Bi-Turbo | Van Sande / Palttala / Virtanen | RTM Racing | DNF |
| 24.8.2003 | Euro GT Spa | 15 | 993 GT2 R | Paul Daniels | Team Point Preparation | 2nd/DNF |
| 24.8.2003 | Euro GT Spa | 16 | 996 Bi-Turbo GT2-R | | Team PSI Motorsport | - |
| 24.8.2003 | Euro GT Spa | 17 | 996 Bi-Turbo | Remko Papenburg | Team Force APP Racing | DNF/6th |
| 24.8.2003 | 24 h Zolder | 20 | 996 Bi-Turbo | Menten / Verbergt / Hemroulle | AD Sport | 2nd |
| 24.8.2003 | 2 h 45 min Road America | 23 | 996 GT3-RS | Maassen / Luhr | Alex Job Racing | 17th |
| 24.8.2003 | 2 h 45 min Road America | 24 | 996 GT3-RS | Bergmeister / Bernhard | Alex Job Racing | 31st |
| 24.8.2003 | 24 h Zolder | 31 | 996 GT3-RS | Penders / Goossens / Dujardyn | RTM Racing | DNF |
| 24.8.2003 | 2 h 45 min Road America | 31 | 996 GT3-RS | Stanton / Mowlem | White Lightning/Petersen Motorsports | 13th |
| 24.8.2003 | 24 h Zolder | 32 | 996 GT3-R | Lamot / Couwberghs / Gonnissen | RTM Racing | DNF |
| 24.8.2003 | 2 h 45 min Road America | 33 | 996 GT3-RS | Lally / Pumpelly | ZIP Racing | 16th |
| 24.8.2003 | 24 h Zolder | 33 | 996 GT3 Cup | Schreurs / Grootaers / Verheyen / de Craene | GLPK Racing | 5th |
| 24.8.2003 | 24 h Zolder | 34 | 993 | Van der Broeck / Van Maldeghem / Herman / Coenen | AD Sport | 11th |
| 24.8.2003 | 24 h Zolder | 35 | 996 GT3 Cup | Geerinckx / Thiron / Geerinckx | AD Sport | DNF |
| 24.8.2003 | 24 h Zolder | 36 | 996 GT3-RS | Thiers / Thiers / Thiers / Vanmoerkerke | Russell Racing | 4th |
| 24.8.2003 | 24 h Zolder | 37 | 996 GT3-R | Verrycken / Van Rossem / De Laet | Markant Racing | DNA |
| 24.8.2003 | 24 h Zolder | 38 | 996 GT3 Cup | Vollebergh / De Laet / Dentant | Markant Racing | 6th |
| 24.8.2003 | 24 h Zolder | 40 | 996 GT3-RS | Lefort / Lambert | Ice Pol Racing Team | DNA |
| 24.8.2003 | 2 h 45 min Road America | 42 | 996 GT3-RS | Policastro / Hindery / Policastro, Jr. | Orbit Racing | 24th |
| 24.8.2003 | 24 h Zolder | 45 | 993 GT2 | Ceusters / Metior / Evers | Sport Promoteam Racing | 21st |
| 24.8.2003 | 24 h Zolder | 46 | 993 | Verhoeven / Van Hoof / Döring / Van de Plas | Speedlover | 7th |
| 24.8.2003 | 24 h Zolder | 50 | 996 GT3-RS | van Merksteijn / Snel / Munsterhuis | System Force Motorsport | DNF |
| 24.8.2003 | Euro GT Spa | 51 | 996 GT3-RS | Charles Brugman | Team Lammertink | - |
| 24.8.2003 | 2 h 45 min Road America | 52 | 996 GT3-RS | Lloyd / Collin | Seikel Motorsport | 19th |
| 24.8.2003 | Euro GT Spa | 53 | 996 GT3 Cup | Cesetti / Pettinelli | Team Paragon | 7th/11th |
| 24.8.2003 | 24 h Zolder | 57 | 911/99 | de Gastines / Nelissen-Grade / Dumarey | RTM Racing | 16th |
| 24.8.2003 | 2 h 45 min Road America | 61 | 996 GT3-R | Rice / Masarati | P.K. Sport | 23rd |
| 24.8.2003 | 2 h 45 min Road America | 66 | 996 GT3-RS | Buckler / Wagner | The Racer's Group | 15th |
| 24.8.2003 | Euro GT Spa | 67 | 993 Cup | Jens Petersen | Jens Petersen | 5th/4th |
| 24.8.2003 | 2 h 45 min Road America | 67 | 996 GT3-RS | Schrom / Ehret | The Racer's Group | 18th |
| 24.8.2003 | 2 h 45 min Road America | 68 | 996 GT3-RS | Bunting / Gleason | The Racer's Group | 20th |
| 24.8.2003 | 2 h 45 min Road America | 79 | 996 GT3-RS | Jackson / Murry | J-3 Racing, Inc. | 22nd |