| 5.1.2020 | Daytona Test | 11 | | Heistand / Schothorst / Perera / Costa | GRT Grasser Racing Team | 36th |
| 5.1.2020 | Daytona Test | 19 | | Nielsen / Legge / Calderón / Frey | GEAR Racing powered by GRT Grasser | 28th |
| 5.1.2020 | Daytona Test | 44 | | Mapelli / Pumpelly / Potter / Lally | GRT Magnus | 26th |
| 5.1.2020 | Daytona Test | 47 | | Gdovic / Lux | Precision Performance Motorsports | 25th |
| 5.1.2020 | Daytona Test | 48 | | Sellers / Snow / Lewis / Caldarelli | Paul Miller Racing | 22nd |
| 11.1.2020 | 24 h Dubai | 77 | | Amstutz / Kujala / Witt / Lind / Balon | Barwell Motorsport | 6th |
| 12.1.2020 | 4 h The Bend | 88 | | Couto / Motojima / Shibata | JLOC | 18th |
| 26.1.2020 | 24 h Daytona | 11 | | Heistand / Schothorst / Perera / Costa | GRT Grasser Racing Team | 33rd |
| 26.1.2020 | 24 h Daytona | 19 | | Nielsen / Legge / Calderón / Frey | GEAR Racing powered by GRT Grasser | 35th |
| 26.1.2020 | 24 h Daytona | 44 | | Lally / Potter / Pumpelly / Mapelli | GRT Magnus | 19th |
| 26.1.2020 | 24 h Daytona | 47 | | Gdovic / Lux / Kvamme / Hoggard | Precision Performance Motorsports | 34th |
| 26.1.2020 | 24 h Daytona | 48 | | Sellers / Snow / Lewis / Caldarelli | Paul Miller Racing | 18th |
| 2.2.2020 | 12 h Bathurst | 6 | | McConville / D'Alberto / Westwood / Deitz | Wall Racing | DNF |
| 2.2.2020 | 12 h Bathurst | 29 | | Talbot / Canto / Zalloua / Denyer | Trofeo Motorsport | 19th |
| 2.2.2020 | 12 h Bathurst | 63 | | Caldarelli / Mapelli / Lind | Orange 1 FFF Racing Team | DNF |
| 15.2.2020 | 4 h Sepang | 88 | | Kogure / Motojima / Shibata | JLOC | 11th |
| 16.2.2020 | Australian GT Sandown | 19 | | Arthur Abrahams | Canon Foods | 10th/8th |
| 16.2.2020 | Australian GT Sandown | 29 | | Tayla Heath | | 6th/9th |
| 23.2.2020 | 4 h Buriram | 88 | | Kogure / Motojima / Shibata | JLOC | 16th |
| 8.3.2020 | Australian GT Eastern Creek | 19 | | Arthur Abrahams | Arthur Abrahams | 13th/10th |
| 13.3.2020 | SRO Test Paul Ricard | 14 | #ALSCGT201900087 | Siedler / Feller / Grenier | Emil Frey Racing | 23rd |
| 13.3.2020 | SRO Test Paul Ricard | 17 | #ALSCGT201500020 | Coach McKansy | HP Racing International | 47th |
| 13.3.2020 | SRO Test Paul Ricard | 29 | | Stefano Consani | Target Racing by Raton | 44th |
| 13.3.2020 | SRO Test Paul Ricard | 77 | | Jordan Witt | Barwell Motorsport | 35th |
| 13.3.2020 | SRO Test Paul Ricard | 78 | | Heistand / Machitski | Barwell Motorsport | 34th |
| 13.3.2020 | SRO Test Paul Ricard | 133 | | Hiesse / Mezard | SVC Sport Management | 40th |
| 13.3.2020 | SRO Test Paul Ricard | 163 | #ALSCGT201900085 | Costa / Perera | Emil Frey Racing | 7th |
| 4.7.2020 | 2 h 40 min Daytona | 44 | | Lally / Potter | GRT Magnus | 22nd |
| 18.7.2020 | 2 h 40 min Sebring | 44 | | Lally / Potter | GRT Magnus | 29th |
| 19.7.2020 | 3 h Mugello | 19 | | Aghakhani / Giammaria / Pulcini | Vincenzo Sospiri Racing | 6th |
| 19.7.2020 | 3 h Mugello | 32 | | Galbiati / Venturini / Postiglione | Imperiale Racing | 3rd |
| 19.7.2020 | 3 h Mugello | 63 | | Kroes / Schandorff / Tujula | Vincenzo Sospiri Racing | 5th |
| 19.7.2020 | 300 km Fuji | 87 | | Takahashi / Yamada | JLOC | 39th |
| 19.7.2020 | 300 km Fuji | 88 | | Kogure / Motojima | JLOC | 38th |
| 26.7.2020 | 3 h Imola | 14 | | Feller / Siedler / Grenier | Emil Frey Racing | 12th |
| 26.7.2020 | 3 h Imola | 19 | | Hamaguchi / Keen | Orange 1 FFF Racing Team | 33rd |
| 26.7.2020 | 3 h Imola | 23 | | Mauron / Galbiati / Venturini | Imperiale Racing | DNF |
| 26.7.2020 | 3 h Imola | 63 | | Lind / Caldarelli / Mapelli | Orange 1 FFF Racing Team | DNF |
| 26.7.2020 | 3 h Imola | 77 | | Collard / Machitski / Mitchell | Barwell Motorsport | 34th |
| 26.7.2020 | 3 h Imola | 78 | | Kujala / MacDowall / Schandorff | Barwell Motorsport | 13th |
| 26.7.2020 | 3 h Imola | 163 | | Perera / Altoè / Costa | Emil Frey Racing | 10th |
| 26.7.2020 | 3 h Imola | 555 | | Latorre / Moulin / Amici | Orange 1 FFF Racing Team | 21st |
| 1.8.2020 | ADAC GT Lausitzring | 19 | | Lagrange / Schmid | GRT Grasser Racing Team | 14th/29th |
| 1.8.2020 | ADAC GT Lausitzring | 63 | | Costa / Perera | GRT Grasser Racing Team | 5th/27th |
| 1.8.2020 | ADAC GT Lausitzring | 82 | | Zimmermann / Schothorst | GRT Grasser Racing Team | 15th/19th |
| 2.8.2020 | British GT Oulton Park | 18 | | Igoe / Lind | WPI Motorsport | 11th/9th |
| 2.8.2020 | Italian GT Misano | 19 | | Nemoto / Tujula | Vincenzo Sospiri Racing | 3rd/DNF |
| 2.8.2020 | Italian GT Misano | 32 | | Galbiati / Venturini | Imperiale Racing | 6th/7th |
| 2.8.2020 | 2 h 40 min Road America | 44 | | Lally / Potter | GRT Magnus | 24th |
| 2.8.2020 | British GT Oulton Park | 55 | | Seale / Clutton | JMH Auto | 13th/7th |
| 2.8.2020 | Italian GT Misano | 63 | | Kroes / Pulcini | Vincenzo Sospiri Racing | 5th/23rd |
| 2.8.2020 | British GT Oulton Park | 72 | | Balon / Keen | Barwell Motorsport | 7th/1st |
| 2.8.2020 | British GT Oulton Park | 78 | | Collard / Mitchell | Barwell Motorsport | 4th/2nd |
| 2.8.2020 | Italian GT Misano | 88 | | Cazzaniga / Marcucci | LP Racing | 9th/DNF |
| 9.8.2020 | GT Open Hungaroring | 4 | | Konôpka / Mikulasko | ARC Bratislava | 12th/13th |
| 9.8.2020 | SRO GT Sprint Misano | 14 | | Grenier / Siedler | Emil Frey Racing | 11th/DNF |
| 9.8.2020 | 300 km Fuji | 87 | | Takahashi / Yamada | JLOC | 39th |
| 9.8.2020 | 300 km Fuji | 88 | | Kogure / Motojima | JLOC | 29th |
| 9.8.2020 | SRO GT Sprint Misano | 163 | | Altoè / Costa | Emil Frey Racing | 8th/5th |
| 15.8.2020 | ADAC GT Nürburgring | 19 | | Lagrange / Schmid | GRT Grasser Racing Team | 23rd/15th |
| 15.8.2020 | ADAC GT Nürburgring | 35 | | Schmidtmann / Hammel | Team mmchip-dkr | DNS |
| 15.8.2020 | ADAC GT Nürburgring | 63 | | Costa / Perera | GRT Grasser Racing Team | 10th/3rd |
| 15.8.2020 | ADAC GT Nürburgring | 82 | | Zimmermann / Schothorst | GRT Grasser Racing Team | 15th/9th |
| 16.8.2020 | British GT Donington | 18 | | Igoe / Caldarelli | WPI Motorsport | 1st/7th |
| 16.8.2020 | British GT Donington | 72 | | Balon / Keen | Barwell Motorsport | 4th/2nd |
| 16.8.2020 | British GT Donington | 78 | | Collard / Mitchell | Barwell Motorsport | 5th/6th |
| 22.8.2020 | 2 h 40 min Virginia [GT] | 44 | | Lally / Potter | GRT Magnus | 11th |
| 22.8.2020 | 2 h 40 min Virginia [GT] | 48 | | Snow / Sellers | Paul Miller Racing | DQ |
| 23.8.2020 | 300 km Suzuka | 87 | | Takahashi / Yamada | JLOC | 27th |