| 1st | 22 | Derani / Bernhard / Van Overbeek | Nissan Onroak DPi | Tequila Patron ESM | 1:10.437 | 1:10.4370 | 1:11.6130 | 1:12.8410 | 1:11.5470 | 1:10.9590 |
| 2nd | 77 | Jarvis / di Grassi / Nunez | Mazda RT24-P | Mazda Team Joest | 1:10.561 | 1:10.5610 | 1:11.6790 | no time | 1:12.0340 | 1:10.7860 |
| 3rd | 55 | Bomarito / Pigot / Franchitti | Mazda RT24-P | Mazda Team Joest | 1:10.600 | 1:10.6000 | 1:11.4900 | 1:12.0970 | 1:11.7110 | 1:11.0030 |
| 4th | 2 | Nato / Dalziel / Sharp | Nissan Onroak DPi | Tequila Patron ESM | 1:10.775 | 1:10.7750 | 1:11.9550 | 1:12.0640 | 1:11.4570 | 1:10.9230 |
| 5th | 7 | Taylor / Castroneves / Rahal | Acura ARX-05 | Acura Team Penske | 1:10.780 | 1:10.7800 | 1:11.9430 | 1:12.5540 | 1:11.6630 | 1:10.8570 |
| 6th | 5 | Albuquerque / Fittipaldi / Vautier | Cadillac DPi-V.R | Mustang Sampling Racing | 1:10.801 | 1:10.8920 | 1:11.9780 | no time | 1:11.7080 | 1:10.8010 |
| 7th | 31 | Nasr / Curran / Chaves | Cadillac DPi-V.R | Whelen Engineering Racing | 1:10.831 | 1:10.9810 | 1:11.8550 | 1:15.5010 | 1:12.1520 | 1:10.8310 |
| 8th | 85 | Trummer / DeFrancesco / Alon | Oreca 07 Gibson | JDC-Miller Motorsports | 1:10.912 | 1:10.9120 | 1:12.0540 | 1:12.3500 | 1:12.6560 | 1:11.6200 |
| 9th | 6 | Montoya / Cameron / Pagenaud | Acura ARX-05 | Acura Team Penske | 1:10.947 | 1:10.9470 | 1:11.7890 | 1:11.8630 | 1:11.9500 | 1:11.7710 |
| 10th | 54 | Bennett / Dumas / Braun | Oreca 07 Gibson | CORE autosport | 1:11.071 | 1:11.0710 | 1:11.7750 | | 1:11.6690 | 1:11.5060 |
| 11th | 99 | Simpson / Goikhberg / Miller | Oreca 07 Gibson | JDC-Miller Motorsports | 1:11.151 | 1:11.1510 | 1:12.2610 | no time | 1:12.9510 | 1:11.9210 |
| 12th | 10 | van der Zande / Taylor / Hunter-Reay | Cadillac DPi-V.R | Konica Minolta Cadillac DPi-V.R | 1:11.260 | 1:11.4680 | 1:11.9620 | 1:12.4270 | 1:12.1150 | 1:11.2600 |
| 13th | 52 | Gutierrez / Saavedra / Owen | Oreca 07 Gibson | AFS/PR1 Mathiasen Motorsports | 1:11.628 | 1:11.7080 | 1:12.5620 | 1:12.8880 | 1:12.1090 | 1:11.6280 |
| 14th | 38 | French / Masson / Boulle | Oreca 07 Gibson | Performance Tech Motorsports | 1:11.859 | 1:11.8590 | 1:12.7250 | 1:15.2620 | 1:13.7720 | 1:12.2680 |
| 15th | 24 | Edwards / Mostert / Krohn | BMW M8 GTE | BMW Team RLL | 1:17.006 | 1:17.0060 | 1:18.1850 | 1:19.0660 | 1:18.5390 | 1:17.3860 |
| 16th | 3 | Garcia / Magnussen / Fässler | Chevrolet Corvette C7.R | Corvette Racing | 1:17.030 | 1:17.0300 | 1:17.9770 | 1:19.2800 | 1:17.9440 | 1:17.3590 |
| 17th | 912 | Bamber / Vanthoor / Jaminet | Porsche 991 RSR | Porsche GT Team | 1:17.209 | 1:17.2090 | 1:18.0510 | no time | 1:18.3590 | 1:17.5750 |
| 18th | 67 | Westbrook / Briscoe / Dixon | Ford GT | Ford Chip Ganassi Racing | 1:17.220 | 1:17.2200 | 1:18.1090 | 1:18.1440 | 1:18.1280 | 1:17.4940 |
| 19th | 4 | Milner / Gavin / Fässler | Chevrolet Corvette C7.R | Corvette Racing | 1:17.341 | 1:17.4510 | 1:18.0260 | 1:18.6920 | 1:17.8470 | 1:17.3410 |
| 20th | 911 | Pilet / Makowiecki / Tandy | Porsche 991 RSR | Porsche GT Team | 1:17.369 | 1:17.3690 | 1:18.2360 | 1:19.5680 | 1:18.6990 | 1:17.9290 |
| 21st | 66 | Hand / Müller / Bourdais | Ford GT | Ford Chip Ganassi Racing | 1:17.383 | 1:17.3830 | 1:18.0400 | 1:18.7480 | 1:18.2320 | 1:17.7490 |
| 22nd | 25 | De Phillippi / Sims / Auberlen | BMW M8 GTE | BMW Team RLL | 1:17.428 | 1:17.4280 | 1:18.1050 | 1:19.8460 | 1:18.1860 | 1:17.9110 |
| 23rd | 62 | Vilander / Molina / Bertolini | Ferrari 488 GTE | Risi Competizione | 1:17.774 | 1:17.7740 | 1:18.5260 | 1:19.1530 | 1:18.6700 | 1:17.8000 |
| 24th | 29 | van der Linde / Mies / Morad | Audi R8 LMS GT3 | Montaplast by Land-Motorsport | 1:19.384 | 1:19.7440 | 1:20.3230 | 1:20.8890 | 1:20.2830 | 1:19.3840 |
| 25th | 63 | Serra / Jeannette / MacNeil | Ferrari 488 GT3 | Scuderia Corsa | 1:19.695 | 1:19.6950 | 1:20.7130 | no time | 1:20.7450 | 1:20.1870 |
| 26th | 15 | Hawksworth / Heinemeier Hansson / Rayhall | Lexus RC F GT3 | 3GT Racing | 1:19.732 | 1:19.7320 | 1:20.7700 | 1:21.5760 | 1:20.6590 | 1:19.8820 |
| 27th | 86 | Parente / Hindman / Legge | Acura NSX GT3 | Meyer Shank Racing w/ Curb-Agajanian | 1:19.737 | 1:20.0950 | 1:21.0220 | no time | 1:20.8840 | 1:19.7370 |
| 28th | 93 | Marks / Farnbacher / Aschenbach | Acura NSX GT3 | Meyer Shank Racing w/ Curb-Agajanian | 1:19.877 | 1:19.8770 | 1:21.2520 | no time | 1:21.2680 | 1:19.8970 |
| 29th | 48 | Sellers / Snow / Lewis | Lamborghini Huracán GT3 | Paul Miller Racing | 1:20.079 | 1:20.0790 | 1:20.5230 | 1:22.6480 | 1:20.8530 | 1:20.3680 |
| 30th | 44 | Potter / Lally / Davis | Audi R8 LMS GT3 | Magnus Racing | 1:20.141 | 1:21.8950 | 1:21.0320 | 1:21.6660 | 1:20.9710 | 1:20.1410 |
| 31st | 33 | Keating / Bleekemolen / Stolz | Mercedes-AMG GT3 | Mercedes-AMG Team Riley Motorsports | 1:20.235 | 1:20.5870 | 1:20.4960 | 1:24.6380 | 1:20.5060 | 1:20.2350 |
| 32nd | 64 | Cressoni / Bell / Montecalvo | Ferrari 488 GT3 | Scuderia Corsa | 1:20.297 | 1:20.2970 | 1:20.8370 | 1:21.7840 | 1:21.5620 | 1:20.4630 |
| 33rd | 14 | Frommenwiler / Baumann / Marcelli | Lexus RC F GT3 | 3GT Racing | 1:20.366 | 1:20.3660 | 1:20.8620 | 1:22.9550 | 1:20.6540 | 1:20.4640 |
| 34th | 71 | Perez / Fraga / Buhk | Mercedes-AMG GT3 | P1 Motorsports | 1:20.452 | 1:21.5800 | 1:20.7360 | 1:21.8470 | 1:20.4520 | 1:20.5000 |
| 35th | 73 | Pappas / Pumpelly / *Henzler | Porsche 991 GT3 R | Park Place Motorsports | 1:20.536 | 1:22.6100 | 1:20.5360 | 1:20.8170 | 1:20.7510 | 1:20.9610 |
| 36th | 58 | Nielsen / Long / Renauer | Porsche 991 GT3 R | Wright Motorsports | 1:20.576 | no time | 1:20.7150 | 1:21.5020 | 1:20.8370 | 1:20.5760 |
| 37th | 96 | Yount / Machavern / *Palttala | BMW M6 GT3 | Turner Motorsport | 1:20.628 | 1:21.6500 | 1:21.3790 | 1:21.8310 | 1:20.6280 | 1:20.6800 |