| 1st | 10 | Taylor / Albuquerque / Rossi | Acura ARX-05 | Konica Minolta Acura | 1:30.022 | 1:30.0220 | 1:31.8870 | 1:32.5170 | 1:31.9870 | 1:30.6820 |
| 2nd | 60 | Cameron / Pla | Acura ARX-05 | Meyer Shank Racing w/ Curb-Agajanian | 1:30.141 | 1:30.1410 | 1:31.5710 | 1:31.6880 | 1:31.0560 | 1:30.4510 |
| 3rd | 01 | van der Zande / Magnussen | Cadillac DPi-V.R | Cadillac Chip Ganassi Racing | 1:30.637 | 1:30.6370 | 1:31.5640 | 1:34.5760 | 1:31.9490 | 1:31.0850 |
| 4th | 48 | Johnson / Kobayashi / Pagenaud | Cadillac DPi-V.R | Ally Cadillac Racing | 1:30.671 | 1:30.6710 | 1:31.9170 | 1:32.9050 | 1:32.5150 | 1:31.3770 |
| 5th | 31 | Nasr / Derani / Conway | Cadillac DPi-V.R | Whelen Engineering Racing | 1:30.824 | 1:30.8240 | 1:31.9090 | 1:32.7770 | 1:31.6470 | 1:30.8930 |
| 6th | 55 | Jarvis / Tincknell / Bomarito | Mazda RT24-P | Mazda Motorsports | 1:31.075 | 1:31.0750 | 1:31.7390 | 1:31.6700 | 1:32.4830 | 1:31.2110 |
| 7th | 5 | Vautier / Duval / Bourdais | Cadillac DPi-V.R | Mustang Sampling/JDC-Miller MotorSports | 1:31.324 | 1:31.3240 | 1:32.3230 | 1:32.5530 | 1:32.2660 | 1:31.7570 |
| 8th | 8 | Farano / Aubry / French | Oreca 07 Gibson | Tower Motorsport | 1:32.918 | 1:38.4810 | 1:32.9180 | 1:36.5140 | 1:33.8810 | 1:35.0910 |
| 9th | 52 | Keating / Jensen / Huffaker | Oreca 07 Gibson | PR1 Mathiasen Motorsports | 1:33.187 | 1:35.3220 | 1:33.1870 | 1:35.0730 | 1:34.3970 | 1:33.9410 |
| 10th | 11 | Thomas / Nunez / Merrill | Oreca 07 Gibson | WIN Autosport | 1:33.215 | 1:35.3040 | 1:33.2150 | 1:36.1790 | 1:33.8360 | 1:39.3660 |
| 11th | 22 | McGuire / Boyd / Smith | Oreca 07 Gibson | United Autosports | 1:34.224 | 1:39.5100 | 1:34.2240 | | 1:35.2860 | 1:35.8880 |
| 12th | 18 | Merriman / Tilley / Dalziel | Oreca 07 Gibson | Era Motorsport | 1:34.492 | 1:38.4550 | 1:34.6390 | 1:40.2700 | 1:34.4920 | 1:34.9010 |
| 13th | 74 | Robinson / Fraga / Andrews | Ligier JS P320 Nissan | Riley Motorsports | 1:39.937 | 1:43.1000 | 1:41.1710 | 1:42.3180 | 1:41.5170 | 1:39.9370 |
| 14th | 2 | Krütten / Cauhaupe / McCusker | Ligier JS P320 Nissan | United Autosports USA | 1:40.404 | 1:40.4040 | 1:42.5830 | 1:41.5740 | 1:44.0600 | 1:41.6570 |
| 15th | 36 | Andretti / Askew / Andretti | Ligier JS P320 Nissan | Andretti Autosport | 1:40.718 | 1:40.9740 | 1:41.1600 | 1:41.8440 | 1:40.8120 | 1:40.7180 |
| 16th | 54 | Bennett / Kurtz / Braun | Ligier JS P320 Nissan | Core Motorsport | 1:40.895 | 1:41.5010 | 1:41.2750 | | 1:40.8950 | 1:42.1760 |
| 17th | 3 | Taylor / Garcia | Chevrolet Corvette C8.R | Corvette Racing | 1:40.944 | 1:40.9440 | 1:42.1790 | | 1:42.6740 | 1:42.1020 |
| 18th | 4 | Tandy / Milner | Chevrolet Corvette C8.R | Corvette Racing | 1:41.318 | 1:41.3180 | 1:41.7970 | 1:44.6210 | 1:42.5170 | 1:42.3190 |
| 19th | 25 | De Phillippi / Eng / Spengler | BMW M8 GTE | BMW Team RLL | 1:41.357 | 1:41.3570 | 1:42.2950 | 1:43.1010 | 1:43.0620 | 1:41.9770 |
| 20th | 38 | Lindh / Goldburg / Llarena | Ligier JS P320 Nissan | Performance Tech Motorsports | 1:41.798 | 1:41.7980 | 1:43.9260 | 1:45.0470 | 1:43.7920 | 1:42.4510 |
| 21st | 91 | Cox / Murry / Bleekemolen | Ligier JS P320 Nissan | Riley Motorsports | 1:41.886 | 1:43.2630 | 1:41.9450 | 1:42.3830 | 1:41.9120 | 1:41.8860 |
| 22nd | 24 | Farfus / Edwards / Krohn | BMW M8 GTE | BMW Team RLL | 1:41.932 | 1:41.9320 | 1:42.1980 | 1:42.0430 | 1:42.8520 | 1:42.2730 |
| 23rd | 84 | Olsen / Cicero / Devlin | Ligier JS P320 Nissan | Dawson Racing | 1:42.256 | 1:42.2560 | 1:43.1280 | | 1:50.1440 | 1:43.8420 |
| 24th | 79 | MacNeil / Jaminet / Campbell | Porsche 991 RSR 19 | WeatherTech Racing | 1:42.305 | 1:42.3630 | 1:44.6740 | 1:42.3050 | 1:44.2150 | 1:43.1460 |
| 25th | 14 | Telitz / Hawksworth / Kirkwood | Lexus RC F GT3 | Vasser-Sullivan Racing | 1:45.081 | 1:45.0810 | 1:47.2290 | | 1:46.6730 | 1:45.1560 |
| 26th | 12 | Veach / Megennis / Montecalvo | Lexus RC F GT3 | Vasser-Sullivan Racing | 1:45.363 | 1:45.3630 | 1:47.5130 | | 1:47.1120 | 1:46.3800 |
| 27th | 16 | Long / Heylen / Hindman | Porsche 991 GT3 R | Wright Motorsports | 1:45.497 | 1:45.4970 | 1:47.0350 | 1:47.6730 | 1:46.8610 | 1:46.1930 |
| 28th | 39 | Heistand / Westphal / McQuarrie | Audi R8 LMS GT3 | CarBahn with Peregrine Racing | 1:45.668 | 1:45.6680 | 1:47.4040 | 1:46.0880 | 1:47.2390 | 1:46.8230 |
| 29th | 96 | Auberlen / Foley / Read | BMW M6 GT3 | Turner Motorsport | 1:45.674 | 1:45.6740 | 1:47.1960 | 1:46.5460 | 2:25.1750 | 1:45.8980 |
| 30th | 9 | Robichon / Vanthoor / Kern | Porsche 991 GT3 R | Pfaff Motorsports | 1:45.776 | 1:45.7760 | 1:47.3230 | 1:48.9700 | 1:47.4940 | 1:47.0550 |
| 31st | 28 | Morad / de Quesada / Johnson | Mercedes-AMG GT3 Evo | Alegra Motorsports | 1:45.792 | 1:45.7920 | 1:47.6230 | 1:48.0000 | 1:47.4830 | 1:46.3040 |
| 32nd | 19 | Goikhberg / Perera / Zimmermann | Lamborghini Huracán GT3 Evo | GRT Grasser Racing Team | 1:45.866 | 1:45.8660 | 1:46.8440 | 1:46.0180 | 1:47.6850 | 1:46.7460 |
| 33rd | 23 | James / de Angelis / Gunn | Aston Martin Vantage AMR GT3 | Heart of Racing Team | 1:46.100 | 1:46.1000 | 1:47.1440 | 1:46.8270 | 1:49.6780 | 1:46.6080 |
| 34th | 75 | Habul / Engel / Grenier | Mercedes-AMG GT3 Evo | SunEnergy1 Racing | 1:46.615 | 1:46.6150 | 1:47.0330 | 1:47.0440 | 1:48.1980 | 1:46.7940 |
| 35th | 42 | Yount / Conwright / Palttala | Audi R8 LMS GT3 | NTE Sport | 1:46.698 | 1:49.7580 | 1:47.5370 | | 1:47.0850 | 1:46.6980 |
| 36th | 1 | Sellers / Snow / Lewis | Lamborghini Huracán GT3 Evo | Paul Miller Racing | 1:46.821 | 1:48.1790 | 1:47.2220 | 1:47.0680 | 1:47.1830 | 1:46.8210 |
| 37th | 44 | Potter / Lally / Pumpelly | Acura NSX GT3 | Magnus Racing with Archangel Motorsports | 1:47.117 | 1:47.1170 | 1:47.6600 | 1:48.2680 | 1:47.3660 | 1:47.2880 |
| 38th | 88 | Ferriol / Legge / Davis | Porsche 991 GT3 R | Team Hardpoint EBM | 1:47.300 | 1:47.3320 | 1:47.6360 | 1:48.6570 | 1:47.3000 | 1:47.3660 |