| 1st | 01 | van der Zande / Bourdais / Dixon / Palou | Cadillac DPi-V.R | Cadillac Racing | 1:33.724 | 1:33.7240 | 1:49.4630 | 1:34.7320 |
| 2nd | 02 | Bamber / Lynn / Ericsson / Magnussen | Cadillac DPi-V.R | Cadillac Racing | 1:33.811 | 1:33.8110 | 1:49.0000 | 1:35.5870 |
| 3rd | 5 | Vautier / Westbrook / Duval / Keating | Cadillac DPi-V.R | JDC Miller MotorSports | 1:33.834 | 1:33.8340 | 1:52.7930 | 1:35.0950 |
| 4th | 10 | Taylor / Albuquerque / Rossi / Stevens | Acura ARX-05 | Konica Minolta Acura ARX-05 | 1:33.902 | 1:33.9020 | 1:48.7300 | 1:36.0490 |
| 5th | 60 | Jarvis / Blomqvist / Castroneves / Pagenaud | Acura ARX-05 | Meyer Shank Racing W/Curb-Agajanian | 1:33.929 | 1:33.9290 | 1:49.5830 | 1:36.3470 |
| 6th | 31 | Derani / Nunez / Conway | Cadillac DPi-V.R | Whelen Engineering Racing | 1:34.011 | 1:34.0110 | 1:36.9640 | 1:35.9590 |
| 7th | 48 | Rockenfeller / Kobayashi / Johnson / Lopez | Cadillac DPi-V.R | Ally Cadillac | 1:34.139 | 1:34.1390 | 1:35.4700 | 1:35.2350 |
| 8th | 18 | Merriman / Tilley / Dalziel / Chatin | Oreca 07 Gibson | Era Motorsport | 1:35.532 | 1:35.5320 | 1:51.1900 | 1:38.3620 |
| 9th | 68 | Heriau / Rasmussen / Jones / Rast | Oreca 07 Gibson | G-Drive Racing By APR | 1:35.662 | 1:35.6620 | 1:37.1370 | 1:39.3590 |
| 10th | 29 | van Eerd / Van Der Garde / Murry / VeeKay | Oreca 07 Gibson | Racing Team Nederland | 1:35.766 | 1:35.7660 | 1:37.6320 | 1:38.1860 |
| 11th | 8 | Farano / Deletraz / Pinto de Andrade / Habsburg | Oreca 07 Gibson | Tower Motorsport | 1:35.821 | 1:35.8210 | 1:39.9560 | 1:37.6890 |
| 12th | 81 | Lux / DeFrancesco / O'Ward / Herta | Oreca 07 Gibson | DragonSpeed USA | 1:35.984 | 1:35.9840 | 1:37.5540 | 1:38.2860 |
| 13th | 20 | Andersen / Fjordbach / Scherer / Müller | Oreca 07 Gibson | High Class Racing | 1:36.247 | 1:36.2470 | 1:37.0120 | 1:39.0460 |
| 14th | 69 | Falb / Allen / Ghiotto / van der Helm | Oreca 07 Gibson | G-Drive Racing By APR | 1:36.287 | 1:36.2870 | 1:38.9520 | 1:38.2140 |
| 15th | 22 | McGuire / Smith / Hanson / Owen | Oreca 07 Gibson | United Autosports | 1:36.301 | 1:36.3010 | 1:38.3780 | 1:37.6390 |
| 16th | 52 | Keating / Jensen / Huffaker / Lapierre | Oreca 07 Gibson | PR1 Mathiasen Motorsports | 1:36.441 | 1:36.4410 | 2:00.0000 | 1:37.9380 |
| 17th | 11 | Thomas / Pierson / Bomarito / Tincknell | Oreca 07 Gibson | PR1 Mathiasen Motorsports | 1:36.647 | 1:36.6470 | 1:41.1850 | 1:37.8640 |
| 18th | 74 | Robinson / Fraga / van Berlo / Cooper | Ligier JS P320 Nissan | Riley Motorsports | 1:42.133 | 1:42.1330 | 1:43.2030 | |
| 19th | 33 | Barbosa / Jakobsen / Priaulx / Willsey | Ligier JS P320 Nissan | Sean Creech Motorsport | 1:42.172 | 1:42.1720 | 1:44.2480 | 1:44.8790 |
| 20th | 54 | Bennett / Braun / Kurtz / Jönsson | Ligier JS P320 Nissan | CORE Autosport | 1:42.630 | 1:42.6300 | 1:45.4070 | |
| 21st | 26 | Siegel / Shields / Crews / de Wilde | Duqueine D08 Nissan | Muehlner Motorsports America | 1:42.776 | 1:42.7760 | 1:56.9330 | 1:44.4650 |
| 22nd | 36 | Andretti / Burdon / Lindh / Chaves | Ligier JS P320 Nissan | Andretti Autosport | 1:42.934 | 1:42.9340 | 2:01.2540 | 1:43.5940 |
| 23rd | 38 | Goldburg / Abe / Grist / Pino | Ligier JS P320 Nissan | Performance Tech Motorsports | 1:43.082 | 1:43.0820 | 1:43.3470 | 1:47.1250 |
| 24th | 13 | Fidani / Wittmer / Kern / Bell | Duqueine D08 Nissan | AWA | 1:43.149 | 1:43.1490 | 1:44.7440 | 1:45.2290 |
| 25th | 6 | Castro / Kranz / Ori / Miller | Duqueine D08 Nissan | Muehlner Motorsports America | 1:43.278 | 1:43.2780 | 1:46.0910 | 1:44.3840 |
| 26th | 7 | Kvamme / McCusker / Estep / Doquin | Duqueine D08 Nissan | Forty7 Motorsports | 1:43.656 | 1:43.6560 | 1:49.1800 | 1:44.6050 |
| 27th | 2 | Vanthoor / Pilet / Olsen / Imperatori | Porsche 991 GT3 R | KCMG | 1:45.087 | 1:45.0870 | 1:58.9360 | 1:46.7300 |
| 28th | 70 | Iribe / Schandorff / Millroy / Pepper | McLaren 720S GT3 | Inception Racing | 1:45.117 | 1:45.1170 | 1:47.2640 | 1:47.4430 |
| 29th | 14 | Hawksworth / Barnicoat / Kirkwood | Lexus RC F GT3 | VasserSullivan | 1:45.120 | 1:45.1200 | 1:47.0100 | 1:47.2690 |
| 30th | 16 | Hardwick / Robichon / Heylen / Lietz | Porsche 991 GT3 R | Wright Motorsports | 1:45.154 | 1:45.1540 | 2:09.6780 | 1:46.3990 |
| 31st | 47 | Lacorte / Sernagiotto / Fuoco / Rovera | Ferrari 488 GT3 | Cetilar Racing | 1:45.175 | 1:45.1750 | 1:48.1100 | 1:47.5590 |
| 32nd | 21 | Mann / Pérez Companc / Nielsen / Vilander | Ferrari 488 GT3 | AF Corse | 1:45.191 | 1:45.1910 | 1:47.3840 | 1:48.7660 |
| 33rd | 62 | Pier Guidi / Calado / Serra / Rigon | Ferrari 488 GT3 | Risi Competizione | 1:45.203 | 1:45.2030 | 1:53.8290 | 1:47.1200 |
| 34th | 9 | Campbell / Jaminet / Nasr | Porsche 991 GT3 R | Pfaff Motorsports | 1:45.209 | 1:45.2090 | 1:56.7840 | 1:46.6220 |
| 35th | 12 | Montecalvo / Telitz / Heistand / Bell | Lexus RC F GT3 | VasserSullivan | 1:45.340 | 1:45.3400 | 1:48.7250 | 1:46.3720 |
| 36th | 97 | MacNeil / Juncadella / Engel / Gounon | Mercedes-AMG GT3 | WeatherTech Racing | 1:45.379 | 1:45.3790 | 1:49.6390 | 1:46.5340 |
| 37th | 44 | Potter / Lally / Pumpelly / Adam | Aston Martin Vantage GT3 | Magnus Racing | 1:45.448 | 1:45.4480 | 1:47.9160 | 1:47.8780 |
| 38th | 57 | Ward / Ellis / Grenier / Auer | Mercedes-AMG GT3 | Winward Racing | 1:45.483 | 1:45.4830 | 1:46.5770 | 1:47.4160 |
| 39th | 79 | MacNeil / Andlauer / Cairoli / Picariello | Porsche 991 GT3 R | WeatherTech Racing | 1:45.499 | 1:45.4990 | 1:59.7460 | 1:46.3340 |
| 40th | 19 | Sweedler / Megrue / Altoè / Segal | Lamborghini Huracán GT3 | TR3 Racing | 1:45.598 | 1:45.5980 | 1:58.9430 | 1:46.0850 |
| 41st | 39 | Megennis / Lewis / Mitchell / Westphal | Lamborghini Huracán GT3 Evo | CarBahn with Peregrine Racing | 1:45.624 | 1:45.6240 | 1:47.6000 | 1:48.5800 |
| 42nd | 59 | Bergstein / Miller / Gallagher / Holton | McLaren 720S GT3 | Crucial Motorsports | 1:45.732 | 1:45.7320 | 1:46.8430 | 1:47.5690 |
| 43rd | 15 | Müller / Assenheimer / Cindric | Mercedes-AMG GT3 | Proton USA | 1:45.763 | 1:45.7630 | 1:49.6800 | 1:46.5950 |
| 44th | 63 | Ineichen / Mapelli / Caldarelli / Bortolotti | Lamborghini Huracán GT3 | TR3 Racing | 1:45.797 | 1:45.7970 | 1:50.5210 | 1:49.1910 |
| 45th | 71 | Goikhberg / Perera / Llarena / Paul | Lamborghini Huracán GT3 | T3 Motorsport North America | 1:45.838 | 1:45.8380 | 1:48.4550 | 1:46.9420 |
| 46th | 99 | Ferriol / Legge / Wilson / Boulle | Porsche 991 GT3 R | Team Hardpoint | 1:45.895 | 1:45.8950 | 1:48.8280 | 1:47.1990 |
| 47th | 66 | Simpson / Bechtolsheimer / Miller / Farnbacher | Acura NSX GT3 | Gradient Racing | 1:45.902 | 1:45.9020 | 1:55.7020 | 1:46.9360 |
| 48th | 23 | Gunn / Riberas / *Martin | Aston Martin Vantage GT3 | Heart of Racing Team | 1:45.937 | 1:45.9370 | | 1:47.2940 |
| 49th | 64 | Giovanis / Plumb / Plumb / Trinkler | Porsche 991 GT3 R | TeamTGM | 1:45.956 | 1:45.9560 | 1:47.9750 | 1:47.0370 |
| 50th | 75 | Habul / Stolz / *Schiller / *Marciello | Mercedes-AMG GT3 | Sun Energy 1 | 1:45.966 | 1:45.9660 | 1:58.4190 | 1:46.6850 |
| 51st | 27 | de Angelis / James / Turner / Gamble | Aston Martin Vantage GT3 | Heart of Racing Team | 1:45.972 | 1:45.9720 | 1:49.2110 | 1:47.3710 |
| 52nd | 32 | Skeen / Davison / McAleer / Andrews | Mercedes-AMG GT3 | Gilbert Korthoff Motorsports | 1:45.994 | 1:45.9940 | 1:53.7150 | 1:46.9300 |
| 53rd | 98 | Dalla Lana / Pittard / Eastwood / Thiim | Aston Martin Vantage GT3 | Northwest AMR | 1:46.049 | 1:46.0490 | 1:47.1890 | 1:47.7800 |
| 54th | 3 | Garcia / Taylor / Catsburg | Chevrolet Corvette C8.R GTD | Corvette Racing | 1:46.073 | 1:46.0730 | 1:51.4640 | 1:47.1670 |
| 55th | 28 | de Quesada / Morad / Lundqvist / Götz | Mercedes-AMG GT3 | Alegra Motorsports | 1:46.096 | 1:46.0960 | 1:46.8350 | 1:46.8560 |
| 56th | 4 | Milner / Tandy / Sørensen | Chevrolet Corvette C8.R GTD | Corvette Racing | 1:46.148 | 1:46.1480 | 1:50.3810 | 1:47.9240 |
| 57th | 42 | Yount / Hites / Conwright / Palttala | Lamborghini Huracán GT3 | NTE/SSR | 1:46.276 | 1:46.2760 | 1:50.2460 | 1:49.1660 |
| 58th | 25 | De Phillippi / Edwards / Farfus / Krohn | BMW M4 GT3 | BMW M Team RLL | 1:46.897 | 1:46.8970 | 1:51.3570 | 1:48.8730 |
| 59th | 24 | Eng / Wittmann / Yelloly / van der Linde | BMW M4 GT3 | BMW M Team RLL | 1:46.948 | 1:46.9480 | 1:59.6820 | 1:47.3630 |
| 60th | 96 | Foley / Auberlen / Dinan / Klingmann | BMW M4 GT3 | Turner Motorsport | 1:47.019 | 1:47.0190 | 1:48.0800 | 1:47.3600 |
| 61st | 34 | Washington / Sofronas / *Bleekemolen / *Bachler | Porsche 991 GT3 R | GMG Racing | 1:47.204 | 1:47.9950 | 2:04.6730 | 1:47.2040 |