| 6.6.2021 | 4 h Paul Ricard | 28 | | Lafargue / Chatin / Vergne | IDEC Sport | 9th |
| 6.6.2021 | 4 h Paul Ricard | 29 | #56 | Lahaye / Lahaye / Heriau | Ultimate | 13th |
| 6.6.2021 | 4 h Paul Ricard | 30 | | Gommendy / Binder / Rojas | Duqueine Team | 4th |
| 6.6.2021 | 4 h Paul Ricard | 32 | #02 | van Uitert / Jamin / Maldonado | United Autosports | 3rd |
| 6.6.2021 | 4 h Paul Ricard | 34 | | Yoluc / Eastwood / Tincknell | Racing Team Turkey | 6th |
| 6.6.2021 | 4 h Paul Ricard | 35 | | Dracone / Campana / Pommer | BHK Motorsport | 11th |
| 6.6.2021 | 4 h Paul Ricard | 37 | #43 | Coigny / Lapierre / Borga | Cool Racing | 12th |
| 6.6.2021 | 4 h Paul Ricard | 39 | | Capillaire / Robin / Robin | Graff | 14th |
| 6.6.2021 | 4 h Paul Ricard | 41 | | Deletraz / Kubica / Ye | Team WRT | 5th |
| 6.6.2021 | 4 h Paul Ricard | 65 | #31 | Canal / Stevens / Allen | Panis Racing | 8th |
| 6.6.2021 | 4 h Paul Ricard | 84 | #76 | Aoki / Bailly / Sancinena | Association SRT41 | 25th |
| 13.6.2021 | 8 h Portimão | 1 | | Calderón / Floersch / Visser | Richard Mille Racing Team | 9th |
| 13.6.2021 | 8 h Portimão | 20 | | Magnussen / Fjordbach / Andersen | High Class Racing | 12th |
| 13.6.2021 | 8 h Portimão | 21 | | Hedman / Montoya / Hanley | DragonSpeed USA | 11th |
| 13.6.2021 | 8 h Portimão | 22 | | Hanson / Scherer / di Resta | United Autosports USA | 6th |
| 13.6.2021 | 8 h Portimão | 28 | #74 | Gelael / Vandoorne / Blomqvist | Jota | 5th |
| 13.6.2021 | 8 h Portimão | 29 | | van Eerd / Van Der Garde / van Uitert | Racing Team Nederland | 13th |
| 13.6.2021 | 8 h Portimão | 31 | | Frijns / Habsburg / Milesi | Team WRT | 7th |
| 13.6.2021 | 8 h Portimão | 34 | | Smiechowski / Deletraz / Brundle | Inter Europol Competition | 8th |
| 13.6.2021 | 8 h Portimão | 38 | #50 | Gonzalez / Felix da Costa / Davidson | Jota | 4th |
| 13.6.2021 | 8 h Portimão | 70 | | Garcia / Beche / Nato | Realteam Racing | 10th |
| 27.6.2021 | 6 h Watkins Glen | 8 | | Farano / Aubry / French | Tower Motorsport | 33rd |
| 27.6.2021 | 6 h Watkins Glen | 11 | #58 | Thomas / Nunez / Merrill | WIN Autosport | 8th |
| 27.6.2021 | 6 h Watkins Glen | 18 | | Merriman / Tilley / Dalziel | Era Motorsport | 34th |
| 27.6.2021 | 6 h Watkins Glen | 22 | | McGuire / Boyd / Smith | United Autosports | 10th |
| 27.6.2021 | 6 h Watkins Glen | 52 | | Keating / Jensen / Huffaker | PR1 Mathiasen Motorsports | 9th |
| 2.7.2021 | 2 h 40 min Watkins Glen | 8 | | Farano / Aubry | Tower Motorsport | 9th |
| 2.7.2021 | 2 h 40 min Watkins Glen | 11 | #58 | Thomas / Nunez | WIN Autosport | 8th |
| 2.7.2021 | 2 h 40 min Watkins Glen | 52 | | Keating / Jensen | PR1 Mathiasen Motorsports | 7th |
| 11.7.2021 | 4 h Monza | 17 | | Merriman / Tilley / Aubry | IDEC Sport | 15th |
| 11.7.2021 | 4 h Monza | 21 | | Hedman / Hanley / Montoya | DragonSpeed USA | 17th |
| 11.7.2021 | 4 h Monza | 22 | | Hanson / Aberdein / Gamble | United Autosports | 2nd |
| 11.7.2021 | 4 h Monza | 24 | | Menchaca / Habsburg / Bradley | Algarve Pro Racing | 10th |
| 11.7.2021 | 4 h Monza | 28 | | Lafargue / Chatin / Pilet | IDEC Sport | 9th |
| 11.7.2021 | 4 h Monza | 29 | #56 | Lahaye / Lahaye / Heriau | Ultimate | 11th |
| 11.7.2021 | 4 h Monza | 30 | | Gommendy / Binder / Rojas | Duqueine Team | 5th |
| 11.7.2021 | 4 h Monza | 32 | #02 | van Uitert / Jamin / Maldonado | United Autosports | DNA |
| 11.7.2021 | 4 h Monza | 34 | | Yoluc / Eastwood / Sargeant | Racing Team Turkey | 7th |
| 11.7.2021 | 4 h Monza | 35 | | Dracone / Campana / Pommer | BHK Motorsport | 18th |
| 11.7.2021 | 4 h Monza | 37 | #43 | Coigny / Lapierre / Borga | Cool Racing | 12th |
| 11.7.2021 | 4 h Monza | 39 | | Capillaire / Robin / Robin | Graff | 16th |
| 11.7.2021 | 4 h Monza | 41 | | Deletraz / Kubica / Ye | Team WRT | 4th |
| 11.7.2021 | 4 h Monza | 65 | #31 | Canal / Stevens / Allen | Panis Racing | 1st |
| 11.7.2021 | 4 h Monza | 70 | | Garcia / Duval | Realteam Racing | 14th |
| 11.7.2021 | 4 h Monza | 82 | | Jaafar / Gelael | Jota | 3rd |
| 11.7.2021 | 4 h Monza | 92 | | van Eerd / Van Der Garde | Racing Team Nederland | 13th |
| 18.7.2021 | 6 h Monza | 1 | | Calderón / Floersch | Richard Mille Racing Team | 11th |
| 18.7.2021 | 6 h Monza | 20 | | Magnussen / Fjordbach / Andersen | High Class Racing | 12th |
| 18.7.2021 | 6 h Monza | 21 | | Hedman / Montoya / Hanley | DragonSpeed USA | 9th |
| 18.7.2021 | 6 h Monza | 22 | | Hanson / Scherer / Albuquerque | United Autosports USA | 3rd |
| 18.7.2021 | 6 h Monza | 28 | #74 | Gelael / Vandoorne / Blomqvist | Jota | 8th |
| 18.7.2021 | 6 h Monza | 29 | | van Eerd / Van Der Garde / de Vries | Racing Team Nederland | 6th |
| 18.7.2021 | 6 h Monza | 31 | | Frijns / Habsburg / Milesi | Team WRT | 5th |
| 18.7.2021 | 6 h Monza | 34 | | Smiechowski / van der Zande / Brundle | Inter Europol Competition | 7th |
| 18.7.2021 | 6 h Monza | 38 | #50 | Gonzalez / Felix da Costa / Davidson | Jota | NC |
| 18.7.2021 | Ultimate Cup Paul Ricard | 39 | | Hubert Haupt | Graff | DNS |
| 18.7.2021 | 6 h Monza | 70 | | Garcia / Duval / Nato | Realteam Racing | 10th |
| 18.7.2021 | 6 h Monza | 82 | | Cullen / Jarvis / Nasr | Risi Competizione | 13th |
| 8.8.2021 | 2 h 40 min Road America | 8 | | Farano / Aubry | Tower Motorsport | 8th |
| 8.8.2021 | 2 h 40 min Road America | 11 | #58 | Thomas / Nunez | WIN Autosport | 10th |
| 8.8.2021 | 2 h 40 min Road America | 18 | | Merriman / Dalziel | Era Motorsport | 7th |
| 8.8.2021 | 2 h 40 min Road America | 52 | | Keating / Jensen | PR1 Mathiasen Motorsports | 9th |
| 15.8.2021 | Le Mans Test | 1 | #48 | Calderón / Floersch / Visser | Richard Mille Racing Team | 23rd |
| 15.8.2021 | Le Mans Test | 17 | #20 | Merriman / Dalziel | IDEC Sport | 30th |
| 15.8.2021 | Le Mans Test | 20 | #64 | Andersen / Taylor / Sørensen | High Class Racing | 19th |
| 15.8.2021 | Le Mans Test | 21 | #79 | Hedman / Hanley / Montoya | DragonSpeed USA | 20th |
| 15.8.2021 | Le Mans Test | 22 | #44 | Hanson / Scherer / Albuquerque | United Autosports USA | 10th |
| 15.8.2021 | Le Mans Test | 23 | #30 | di Resta / Boyd | United Autosports | 9th |
| 15.8.2021 | Le Mans Test | 24 | #56 | Kelly / Aubry / Trummer | PR1 Mathiasen Motorsports | 14th |
| 15.8.2021 | Le Mans Test | 28 | #74 | Sean Gelael | Jota | 25th |
| 15.8.2021 | Le Mans Test | 29 | #36 | van Eerd / Van Der Garde / van Uitert | Racing Team Nederland | 12th |
| 15.8.2021 | Le Mans Test | 30 | #57 | Binder / Rojas / Gommendy / Hörr | Duqueine Team | 15th |
| 15.8.2021 | Le Mans Test | 31 | #73 | Habsburg / Milesi | Team WRT | 13th |
| 15.8.2021 | Le Mans Test | 32 | #02 | Jamin / Aberdein / Maldonado | United Autosports | 16th |
| 15.8.2021 | Le Mans Test | 34 | #59 | Smiechowski / van der Zande / Brundle | Inter Europol Competition | 22nd |
| 15.8.2021 | Le Mans Test | 38 | #50 | Gonzalez / Felix da Costa / Davidson | Jota | 24th |
| 15.8.2021 | Le Mans Test | 39 | #05 | Capillaire / Robin / Robin | SO24-Dirob by Graff | 29th |
| 15.8.2021 | Le Mans Test | 41 | #72 | Kubica / Deletraz / Ye | Team WRT | 8th |
| 15.8.2021 | Le Mans Test | 44 | #38 | Konôpka / Webb / Konôpka | ARC Bratislava | 27th |
| 15.8.2021 | Le Mans Test | 48 | #75 | Lafargue / Chatin / Pilet | IDEC Sport | 6th |
| 15.8.2021 | Le Mans Test | 49 | #39 | Fjordbach / Magnussen / Magnussen | High Class Racing | 17th |
| 15.8.2021 | Le Mans Test | 65 | #31 | Canal / Stevens / Allen | Panis Racing | 7th |
| 15.8.2021 | Le Mans Test | 70 | #82 | Garcia / Duval | Realteam Racing | 18th |
| 15.8.2021 | Le Mans Test | 82 | #54 | Cullen / Jarvis / Nasr | Risi Competizione | 11th |
| 15.8.2021 | Le Mans Test | 84 | #76 | Aoki / Bailly / Lahaye / Sancinena | Association SRT41 | 28th |
| 22.8.2021 | 24 h Le Mans | 1 | #48 | Calderón / Floersch / Visser | Richard Mille Racing Team | DNF |
| 22.8.2021 | 24 h Le Mans | 17 | #20 | Merriman / Laurent / Dalziel | IDEC Sport | DNS |
| 22.8.2021 | 24 h Le Mans | 20 | #64 | Andersen / Taylor / Sørensen | High Class Racing | 18th |
| 22.8.2021 | 24 h Le Mans | 21 | #79 | Hedman / Hanley / Montoya | DragonSpeed USA | 15th |
| 22.8.2021 | 24 h Le Mans | 22 | #44 | Hanson / Scherer / Albuquerque | United Autosports USA | 40th |
| 22.8.2021 | 24 h Le Mans | 23 | #30 | di Resta / Lynn / Boyd | United Autosports | 9th |
| 22.8.2021 | 24 h Le Mans | 24 | #56 | Kelly / Aubry / Trummer | PR1 Mathiasen Motorsports | DNF |
| 22.8.2021 | 24 h Le Mans | 27 | | Patterson / Rao | Algarve Racing | DNA |
| 22.8.2021 | 24 h Le Mans | 28 | #74 | Gelael / Vandoorne / Blomqvist | Jota | 7th |
| 22.8.2021 | 24 h Le Mans | 29 | #36 | van Eerd / Van Der Garde / van Uitert | Racing Team Nederland | 16th |
| 22.8.2021 | 24 h Le Mans | 30 | #57 | Binder / Rojas / Gommendy | Duqueine Team | 14th |
| 22.8.2021 | 24 h Le Mans | 31 | #73 | Frijns / Habsburg / Milesi | Team WRT | 6th |
| 22.8.2021 | 24 h Le Mans | 32 | #02 | Jamin / Aberdein / Maldonado | United Autosports | DNF |
| 22.8.2021 | 24 h Le Mans | 34 | #59 | Smiechowski / van der Zande / Brundle | Inter Europol Competition | 10th |
| 22.8.2021 | 24 h Le Mans | 38 | #50 | Gonzalez / Felix da Costa / Davidson | Jota | 13th |