| 15.4.2018 | SRO GT Asia Sepang | 17 | Cayman GT4 Clubsport MR | Ida / Chang | Taiwan Top Speed Racing Team | 24th/26th |
| 22.4.2018 | 12 h Navarra | 29 | 991 GT3 R | Drmić / Eisemann / Lukas | Forch Racing | 4th |
| 22.4.2018 | 12 h Navarra | 60 | 911 Carrera RS 3.0 | | Historic Team | T-car |
| 22.4.2018 | 12 h Navarra | 64 | 991 GT3 Cup I | Polette / Lelievre / Gibon | Porsche Lorient Racing | 12th |
| 22.4.2018 | 12 h Navarra | 65 | 991 GT3 Cup I | Demorge / Demorge / Blasco / Ancel | Porsche Lorient Racing | 13th |
| 22.4.2018 | GT Sports Club Monza | 66 | 991 GT3 R | Jürgen Häring | Herberth Motorsport | DNS |
| 22.4.2018 | 12 h Navarra | 73 | 991 GT3 Cup I | Curti / Curti / Frezza | EbiMotors | 9th |
| 22.4.2018 | 12 h Navarra | 75 | 991 GT3 Cup I | Abramczyk / Vozniak / Lafargue | IDEC Sport Racing | 18th |
| 22.4.2018 | 12 h Navarra | 81 | 991 GT3 Cup I | Kieber / König / Spescha | Huber Motorsport | 11th |
| 22.4.2018 | 12 h Navarra | 94 | 991 GT3 Cup I | Gillion / Graberg / Holmlund | QSR Racingschool | 14th |
| 22.4.2018 | 12 h Navarra | 911 | 991 GT3 R | Allemann / Bohn / Renauer | Herberth Motorsport | 10th |
| 22.4.2018 | 3 h Monza | 911 | 991 GT3 R | Dumas / Makowiecki / Werner | Manthey-Racing | 45th |
| 22.4.2018 | GT Sports Club Monza | 991 | 991 GT3 R | Edward-Lewis Brauner | Herberth Motorsport | 11th |
| 22.4.2018 | 3 h Monza | 991 | 991 GT3 R | Häring / Brauner / Triller | Herberth Motorsport | 38th |
| 29.4.2018 | ADAC GT Most | 17 | 991 GT3 R I | Estre / Bernhard | KÜS Team75 Bernhard | 12th/DNF |
| 29.4.2018 | ADAC GT Most | 18 | 991 GT3 R I | de Leener / Bachler | KÜS Team75 Bernhard | 15th/14th |
| 29.4.2018 | GT4 Central Cup Most | 18 | Cayman PRO4 | Wollgarten / Oestreich | PROsport Performance | 3rd/4th |
| 29.4.2018 | GT4 Central Cup Most | 41 | Cayman GT4 Clubsport MR | Kremer / Schöll | Allied Racing | 6th/10th |
| 29.4.2018 | GT4 Central Cup Most | 43 | Cayman GT4 Clubsport MR | Viebahn / Severs | Allied Racing | 4th/8th |
| 29.4.2018 | ADAC GT Most | 69 | 991 GT3 R I | Slooten / Luhr | IronForce by Ring Police | 18th/24th |
| 29.4.2018 | ADAC GT Most | 99 | 991 GT3 R I | Renauer / Jaminet | Precote Herberth Motorsport | 3rd/3rd |
| 29.4.2018 | Italian GT Imola | 163 | 997 GT3 Cup | Merendino / Di Benedetto | Island Motorport | 9th/9th |
| 29.4.2018 | Italian GT Imola | 169 | 991 GT3 Cup | Nicolosi / La Mazza | Ebimotors | 10th/10th |
| 29.4.2018 | Italian GT Imola | 176 | 997 GT3 Cup | Pisani / Sauto | Eugenio Pisani | DNF/13th |
| 4.5.2018 | 500 km Fuji | 7 | 991 GT3 R | Fujii / Müller | D'station Racing | 20th |
| 4.5.2018 | 500 km Fuji | 9 | 991 GT3 R | Kubo / Ishikawa | Pacific with Gulf Racing | 31st |
| 5.5.2018 | 6 h Spa | 56 | 991 RSR II | Bergmeister / Lindsey / Perfetti | Team Project 1 | 31st |
| 5.5.2018 | 6 h Spa | 77 | 991 RSR II | Ried / Andlauer / Campbell | Dempsey - Proton Racing | 24th |
| 5.5.2018 | 6 h Spa | 86 | 991 RSR II | Wainwright / Barker / Davison | Gulf Racing UK | 29th |
| 5.5.2018 | 6 h Spa | 88 | 991 RSR II | Al Qubaisi / Cairoli / Roda | Dempsey - Proton Racing | 26th |
| 5.5.2018 | 6 h Spa | 91 | 991 RSR II | Lietz / Bruni | Porsche GT Team | 16th |
| 5.5.2018 | 6 h Spa | 92 | 991 RSR II | Christensen / Estre | Porsche GT Team | 14th |
| 6.5.2018 | GT4 Euro Brands Hatch | 13 | Cayman GT4 Clubsport MR | Bethke / Basseng | Schwede Motorsport | 17th/15th |
| 6.5.2018 | GT4 Euro Brands Hatch | 15 | Cayman GT4 Clubsport MR | Schulte / Schraml | Schwede Motorsport | 24th/31st |
| 6.5.2018 | 2 h 40 min Mid-Ohio | 16 | 991 GT3 R | Schein / Henzler | Wright Motorsports | 32nd |
| 6.5.2018 | GT4 Euro Brands Hatch | 42 | Cayman GT4 Clubsport MR | Schöll / Bölting | Allied-Racing | 34th/29th |
| 6.5.2018 | GT4 Euro Brands Hatch | 43 | Cayman GT4 Clubsport MR | Littman / Still | Allied-Racing | 22nd/30th |
| 6.5.2018 | 2 h 40 min Mid-Ohio | 58 | 991 GT3 R | Nielsen / Long | Wright Motorsports | 28th |
| 6.5.2018 | GT4 Euro Brands Hatch | 75 | 997 GT4 | Cerati / Fondi | Autorlando Sport | 16th/37th |
| 6.5.2018 | GT4 Euro Brands Hatch | 76 | 997 GT4 | Ghezzi / Giovanelli | Autorlando Sport | 9th/11th |
| 6.5.2018 | GT4 Euro Brands Hatch | 222 | Cayman GT4 Clubsport MR | Niki Leutwiler | Porsche Zentrum Oberer Zürichsee by TFT Racing | 11th/DNF |
| 6.5.2018 | 2 h 40 min Mid-Ohio | 911 | 991 RSR II | Tandy / Pilet | Porsche GT Team | 19th |
| 6.5.2018 | 2 h 40 min Mid-Ohio | 912 | 991 RSR II | Bamber / Vanthoor | Porsche GT Team | 14th |
| 12.5.2018 | LM Cup Monza | 88 | 991 GT3 R | Baccani / Venerosi | Ebimotors | 14th |
| 13.5.2018 | FFSA GT4 Pau | 1 | Cayman GT4 Clubsport MR | Lapierre / Parisy | CD Sport | 1st/3rd |
| 13.5.2018 | FFSA GT4 Pau | 2 | Cayman GT4 Clubsport MR | Simonet / Deguffroy | CD Sport | 6th/DNF |
| 13.5.2018 | 24 h Nürburgring | 2 | 991 GT3 R | Jans / Böckmann / Slooten / Luhr | Team GetSpeed Performance | 16th |
| 13.5.2018 | 24 h Nürburgring | 12 | 991 GT3 R | Klohs / Kern / Olsen / Frommenwiler | Manthey Racing | 18th |
| 13.5.2018 | FFSA GT4 Pau | 14 | Cayman GT4 Clubsport MR | Cyril Saleilles | Cool Racing | DNF/10th |
| 13.5.2018 | SRO GT Asia Buriram | 17 | Cayman GT4 Clubsport MR | Chang / Lu | Taiwan Top Speed Racing Team | 24th/23rd |
| 13.5.2018 | 24 h Nürburgring | 17 | 991 GT3 R | Christensen / Cairoli / Bergmeister / Lotterer | KÜS Team75 Bernhard | 21st |
| 13.5.2018 | FFSA GT4 Pau | 18 | Cayman GT4 Clubsport MR | Dub / Dub | Cool Racing | 19th/8th |
| 13.5.2018 | SRO GT Asia Buriram | 22 | Cayman GT4 Clubsport MR | Bunditkitsada / Sirimongkolkasem | JWD Unixx Racing Team | 22nd/26th |
| 13.5.2018 | FFSA GT4 Pau | 25 | Cayman GT4 Clubsport MR | Lambert / Gomar | AGS Events | DQ/6th |
| 13.5.2018 | FFSA GT4 Pau | 27 | Cayman GT4 Clubsport MR | Blanchemain / Palette | IMSA Performance | 25th/DNF |
| 13.5.2018 | 24 h Nürburgring | 30 | 991 GT3 R | Arnold / Müller / Henzler / Campbell | Frikadelli Racing Team | 11th |
| 13.5.2018 | 24 h Nürburgring | 31 | 991 GT3 R | Siedler / Seefried / Fernandez Laser / Jaminet | Frikadelli Racing Team | DNF |
| 13.5.2018 | 24 h Nürburgring | 44 | 991 GT3 R | Bachler / Müller / Ragginger / Werner | Falken Motorsports | 9th |
| 13.5.2018 | 24 h Nürburgring | 46 | 991 GT3 Cup MR | Ackermann / Lukovnikov / Walter / Wiskirchen | rent2Drive-FAMILIA-racing | 38th |
| 13.5.2018 | 24 h Nürburgring | 50 | 997 GT3 Cup | Reggiani / Jacoma / Bravetti / Tenchini | Porsche Club Ticino | NC |
| 13.5.2018 | 24 h Nürburgring | 55 | 991 GT3 Cup I | Putman / Espenlaub / Foster / Maassen | Prosport-Performance GmbH, | 24th |
| 13.5.2018 | 24 h Nürburgring | 57 | 991 GT3 Cup II | Hill / Shoffner / Klasen / Huisman | Team GetSpeed Performance | 31st |
| 13.5.2018 | 24 h Nürburgring | 58 | 991 GT3 Cup I | Cameron / Bonk / Onslow-Cole | | 25th |
| 13.5.2018 | 24 h Nürburgring | 59 | 991 GT3 Cup I | Berg / Hertenstein / Kodídek | GIGASPEED Team GetSpeed Performance | 82nd |
| 13.5.2018 | 24 h Nürburgring | 61 | 991 GT3 Cup I | Scheerbarth / Oehme / Goder / Schlüter | Team 9und11 | 30th |
| 13.5.2018 | 24 h Nürburgring | 62 | Cayman PRO4 | Viebahn / Ortmann / Koll / Mies | Prosport-Performance GmbH | DNF |
| 13.5.2018 | FFSA GT4 Pau | 64 | Cayman GT4 Clubsport MR | Jouffret / Trémoulet | VIC' Team | 4th/DNF |
| 13.5.2018 | 24 h Nürburgring | 64 | 991 GT3 Cup II MR | Bleul / "Takis" / Zimmermann / Oberheim | Black Falcon Team TMD Friction | DNS |
| 13.5.2018 | 24 h Nürburgring | 65 | Cayman | Wawer / Wawer / Thomson / Grassl | Proom Racing | 50th |
| 13.5.2018 | FFSA GT4 Pau | 72 | Cayman GT4 Clubsport MR | Damiani / Carriere | AGS Events | 17th/DNF |
| 13.5.2018 | FFSA GT4 Pau | 79 | Cayman GT4 Clubsport MR | Herr / Nauroy | AGS Events | 14th/12th |
| 13.5.2018 | 24 h Nürburgring | 80 | 997 GT3 Cup | Vleugels / Warum / Welschar / Sapino | rent2Drive-FAMILIA-racing | DNF |
| 13.5.2018 | 24 h Nürburgring | 96 | 991 GT3 Cup MR | Chrzanowski / Jodexnis / Scharmach / Schelp | www.clickversicherung.de Team | DNF |
| 13.5.2018 | 24 h Nürburgring | 133 | Cayman S | Engljähringer / Fuhrmann / Hollerweger / Veronelli | Pixum Team Adrenalin Motorsport | 75th |
| 13.5.2018 | 24 h Nürburgring | 134 | Cayman S | Vicenzi / Carobbio / Briody / Müller | Securtal Sorg Rennsport | DNF |
| 13.5.2018 | 24 h Nürburgring | 136 | Cayman S | Schicht / Schäfer / Eichner / Imholz | Team Mathol Racing e.V. | DNF |
| 13.5.2018 | 24 h Nürburgring | 137 | Cayman S | Held / Falcon / Waldhausen / von Bär | Team Mathol Racing e.V. | 85th |
| 13.5.2018 | 24 h Nürburgring | 138 | 991 Carrera | Köhler / König / Schneider / Böhm | Black Falcon Team TMD Friction | 57th |
| 13.5.2018 | 24 h Nürburgring | 143 | Cayman | Zünd / Teichert / Attallah / Palluth | Pixum Team Adrenalin Motorsport | 67th |
| 13.5.2018 | 24 h Nürburgring | 144 | Cayman | Büllesbach / Schettler / Smyrlis / Arimon | Pixum Team Adrenalin Motorsport | 64th |
| 13.5.2018 | 24 h Nürburgring | 145 | Cayman (Typ 981) | Eastwood / Andlauer | Care For Climate | DNA |
| 13.5.2018 | 24 h Nürburgring | 146 | Cayman | Fukuda / Griesemann / Mönch / Quante | GTronix 360 Team mcchip-dkr | DNF |
| 13.5.2018 | 24 h Nürburgring | 148 | Cayman | Finck / Moetefindt / Munhowen | ADAC Team Weser-Ems e.V. | DNF |
| 13.5.2018 | 24 h Nürburgring | 149 | Cayman | Krumbach / Timbal / Bollerslev / Weiss | Porsche Club Ticino | 73rd |
| 13.5.2018 | 24 h Nürburgring | 236 | Cayman | Bohr / von Danwitz / Jung / Rönnefarth | Teichmann Racing | 37th |
| 13.5.2018 | 24 h Nürburgring | 301 | Cayman GT4 Clubsport (Typ 981) | Geisselhart / Flaig / "Maximilian" / Nytroeen | Teichmann Racing | 49th |
| 13.5.2018 | 24 h Nürburgring | 302 | Cayman GT4 Clubsport (Typ 981) | Rebhan / Mölig / Müller / Kranz | Mühlner Motorsport | 28th |
| 13.5.2018 | 24 h Nürburgring | 303 | Cayman GT4 Clubsport (Typ 981) | von Gartzen / von Gartzen / Hoppe / Kranz | Mühlner Motorsport | 29th |
| 13.5.2018 | 24 h Nürburgring | 305 | Cayman GT4 Clubsport (Typ 981) | Beyer / Akata / Hewer / Simon | Securtal Sorg Rennsport | DNF |
| 13.5.2018 | 24 h Nürburgring | 306 | Cayman GT4 Clubsport (Typ 981) | Krämer / Tönges / Veremenko / Wißkirchen | | 44th |
| 13.5.2018 | 24 h Nürburgring | 307 | Cayman GT4 Clubsport (Typ 981) | Keilwerth / Montana / Weber / Vazquez | Team Mathol Racing e.V. | 59th |
| 13.5.2018 | 24 h Nürburgring | 308 | Cayman GT4 Clubsport (Typ 981) | Herbst / Stengel / Günther / Nittel | | DNF |
| 13.5.2018 | 24 h Nürburgring | 309 | Cayman GT4 Clubsport (Typ 981) | Cramer / Chapel / Henzel / Vinke | Team Mathol Racing e.V. | 53rd |
| 13.5.2018 | 24 h Nürburgring | 310 | Cayman GT4 Clubsport (Typ 981) | Assmann / Egbert / Jacoma / Riemer | Schmickler Performance | DNF |
| 13.5.2018 | 24 h Nürburgring | 320 | 991 GT3 Cup II | von Löwis of Menar / "Smudo" / Schellhaas / Duffner | Care For Climate | 27th |
| 13.5.2018 | 24 h Nürburgring | 420 | Cayman | Blickle / Steinhaus / Eastwood / Kiefer | Care For Climate | 33rd |
| 13.5.2018 | 24 h Nürburgring | 718 | Cayman | Zensen / Peitzmeier / Bretschneider / Fürsch | | DNF |
| 13.5.2018 | SRO GT Asia Buriram | 911 | 991 GT3 R | Stuvik / Davies | Craft-Bamboo Racing | 11th/8th |
| 13.5.2018 | FFSA GT4 Pau | 982 | Cayman GT4 Clubsport MR | Stéphane Brémard | FOXO | 10th/15th |
| 13.5.2018 | SRO GT Asia Buriram | 991 | 991 GT3 R | Read / O'Young | Craft-Bamboo Racing | 14th/17th |