| 1st | 13 | Jani / Buemi / Heidfeld | Oreca 07 Gibson | Rebellion Racing | 1:48.178 | 1:48.1780 | 1:50.2450 | 1:52.2800 | 1:50.6020 | 1:49.3290 |
| 2nd | 5 | Fittipaldi / Barbosa / Albuquerque | Cadillac DPi-V.R | Mustang Sampling Racing | 1:48.273 | 1:48.2730 | 1:50.4140 | 1:53.3990 | 1:49.5570 | 1:49.2110 |
| 3rd | 31 | Cameron / Conway / Curran | Cadillac DPi-V.R | Whelen Engineering Racing | 1:48.314 | 1:48.3140 | 1:49.6290 | 1:52.8680 | 1:49.6080 | 1:49.5470 |
| 4th | 52 | Gutierrez / Kimber-Smith / Guasch | Ligier JS P217 Gibson | PR1/Mathiasen Motorsports | 1:49.056 | 1:49.0560 | 1:50.7920 | 1:52.8970 | 1:50.1700 | 1:50.6010 |
| 5th | 22 | Hartley / Senna / Van Overbeek / Brown | Nissan Onroak DPi | Tequila Patron ESM | 1:49.103 | 1:49.1030 | 1:50.9530 | | 1:51.0160 | 1:49.7740 |
| 6th | 2 | Derani / Dalziel / *Sharp | Nissan Onroak DPi | Tequila Patron ESM | 1:49.405 | no time | 1:51.0830 | 1:52.9290 | 1:51.0880 | 1:49.4050 |
| 7th | 85 | Simpson / Goikhberg / Miller | Oreca 07 Gibson | JDC-Miller Motorsports | 1:49.516 | 1:49.5870 | 1:51.0050 | 1:52.5430 | 1:49.5160 | 1:50.1540 |
| 8th | 10 | Taylor / Taylor / Lynn | Cadillac DPi-V.R | Konica Minolta Cadillac DPi-V.R | 1:49.541 | 1:49.5410 | 1:49.9870 | 1:52.8470 | 1:49.8880 | 1:50.3990 |
| 9th | 55 | Bomarito / Pigot / Nunez | Mazda RT24-P | Mazda Motorsports | 1:49.907 | 1:49.9070 | 1:52.0160 | 1:58.0530 | 1:50.4170 | 1:50.8720 |
| 10th | 90 | van der Zande / Rast / Goossens | Riley Mk.30 Gibson | VisitFlorida Racing | 1:49.919 | 1:49.9190 | 1:51.1740 | 1:52.5320 | 1:50.8530 | 1:50.1370 |
| 11th | 70 | Miller / Franchitti / Long | Mazda RT24-P | Mazda Motorsports | 1:50.284 | 1:50.2840 | 1:52.1050 | no time | 1:50.6100 | 1:50.6220 |
| 12th | 26 | Yacaman / Thompson / Ducote / Drumwright | Oreca FLM 09 Chevrolet | BAR 1 Motorsports | 1:53.340 | 1:53.5060 | 1:55.5580 | 2:03.0990 | 1:54.7410 | 1:53.3400 |
| 13th | 38 | French / O'Ward / Masson | Oreca FLM 09 Chevrolet | Performance Tech Motorsports | 1:53.575 | 1:53.5750 | 1:54.5490 | 1:56.3220 | 1:54.8750 | 1:54.3660 |
| 14th | 8 | Grist / Rayhall / Hanratty | Oreca FLM 09 Chevrolet | Starworks Motorsports | 1:55.189 | 1:56.4330 | 1:56.2660 | 1:57.1530 | 1:55.4620 | 1:55.1890 |
| 15th | 20 | Rice / Burkett / Yount / Kvamme | Oreca FLM 09 Chevrolet | BAR1 Motorsports | 1:55.846 | 1:55.8460 | 1:57.6190 | 2:10.1570 | 1:57.7010 | 2:06.7970 |
| 16th | 67 | Briscoe / Westbrook / Dixon | Ford GT | Ford Chip Ganassi Racing | 1:55.939 | 1:55.9390 | 1:58.1380 | 1:59.3580 | 1:57.1660 | 1:57.0380 |
| 17th | 66 | Hand / Bourdais / Müller | Ford GT | Ford Chip Ganassi Racing | 1:56.175 | 1:56.1750 | 1:57.9700 | 1:58.2820 | 1:57.1160 | 1:56.5560 |
| 18th | 4 | Milner / *Fässler / *Gavin | Chevrolet Corvette C7.R | Corvette Racing | 1:56.252 | 1:56.2520 | 1:58.1890 | 1:59.4880 | 1:57.2060 | 1:57.2620 |
| 19th | 912 | Estre / Lietz / Vanthoor | Porsche 991 RSR | Porsche GT Team | 1:56.319 | 1:56.3190 | 1:58.3760 | 2:00.4930 | 1:57.3790 | 1:56.8250 |
| 20th | 3 | Garcia / Magnussen / Rockenfeller | Chevrolet Corvette C7.R | Corvette Racing | 1:56.368 | 1:56.3680 | 1:58.0920 | 2:00.2450 | 1:57.4330 | 1:57.6660 |
| 21st | 68 | Mücke / Pla / Johnson | Ford GT | Ford Chip Ganassi Team UK | 1:56.441 | 1:56.4410 | 1:57.8980 | 2:02.8920 | 1:57.5280 | 1:57.1550 |
| 22nd | 911 | Werner / Pilet / Makowiecki | Porsche 991 RSR | Porsche GT Team | 1:56.487 | 1:56.4870 | 1:57.7640 | 1:58.7850 | 1:57.1090 | 1:56.9310 |
| 23rd | 24 | Catsburg / Tomczyk / Edwards | BMW M6 GTLM | BMW Team RLL | 1:56.617 | 1:56.6170 | 1:59.1330 | 2:00.9210 | 1:58.4750 | 1:56.7820 |
| 24th | 25 | Sims / Auberlen / Wittmer | BMW M6 GTLM | BMW Team RLL | 1:56.660 | 1:56.6600 | 1:58.8620 | 1:59.0190 | 1:58.9870 | 1:57.9600 |
| 25th | 62 | Fisichella / Calado / Vilander | Ferrari 488 GTE | Risi Competizione | 1:57.283 | 1:57.4750 | 1:58.5390 | 1:57.8960 | 1:57.5010 | 1:57.2830 |
| 26th | 75 | Said / Habul / Vautier | Mercedes-AMG GT3 | SunEnergy1 Racing | 1:59.738 | 1:59.7380 | 2:01.9270 | no time | 2:01.4220 | 2:01.1590 |
| 27th | 29 | De Phillippi / Mies / Gounon | Audi R8 LMS GT3 | Montaplast by Land-Motorsport | 2:00.490 | 2:00.4900 | 2:02.1280 | 2:01.2680 | 2:01.1140 | 2:00.6890 |
| 28th | 28 | Morad / Pumpelly / Christensen / de Quesada | Porsche 991 GT3 R | Alegra Motorsports | 2:00.491 | 2:01.7520 | 2:02.6870 | 2:02.7800 | 2:01.7510 | 2:00.4910 |
| 29th | 57 | Davis / Aschenbach / Bell | Audi R8 LMS GT3 | Stevenson Motorsports | 2:00.646 | 2:01.2220 | 2:01.9910 | 2:01.7880 | 2:00.9640 | 2:00.6460 |
| 30th | 96 | Marks / Krohn / Klingmann | BMW M6 GT3 | Turner Motorsport | 2:00.912 | 2:02.2560 | 2:02.2600 | 2:02.0400 | 2:01.2640 | 2:00.9120 |
| 31st | 16 | Lewis / Mul / Sandberg | Lamborghini Huracán GT3 | Change Racing | 2:00.967 | 2:00.9670 | 2:02.1840 | 2:03.1280 | 2:01.8840 | 2:01.6000 |
| 32nd | 11 | Bortolotti / Antinucci / Engelhart / Ineichen | Lamborghini Huracán GT3 | GRT Grasser Racing Team | 2:00.996 | 2:01.3850 | 2:02.1360 | 2:01.3410 | 2:02.2190 | 2:00.9960 |
| 33rd | 15 | Alon / Hawksworth / Cindric | Lexus RCF GT3 | 3GT Racing | 2:00.998 | 2:00.9980 | 2:01.6740 | 2:03.0700 | 2:01.1250 | 2:01.4960 |
| 34th | 48 | Snow / Sellers / von Moltke | Lamborghini Huracán GT3 | Paul Miller Racing | 2:01.040 | 2:02.3450 | 2:02.2150 | 2:01.2170 | 2:01.0400 | 2:01.3960 |
| 35th | 33 | Keating / Bleekemolen / Farnbacher | Mercedes-AMG GT3 | Riley Motorsports - Team AMG | 2:01.074 | 2:01.2840 | 2:01.6290 | 2:01.1810 | 2:01.6090 | 2:01.0740 |
| 36th | 14 | Pruett / Karam / James | Lexus RCF GT3 | 3GT Racing | 2:01.158 | 2:01.1580 | 2:02.0520 | 2:01.9090 | 2:01.8160 | 2:01.5850 |
| 37th | 54 | Bennett / Braun / Jönsson | Porsche 991 GT3 R | Core Autosport | 2:01.217 | 2:03.6720 | 2:02.2600 | 2:01.2170 | 2:01.8000 | 2:01.8220 |
| 38th | 63 | Nielsen / Cressoni / Balzan | Ferrari 488 GT3 | Scuderia Corsa | 2:01.267 | 2:01.6280 | 2:01.8140 | | 2:01.6510 | 2:01.2670 |
| 39th | 50 | MacNeil / Van Gisbergen / Jeannette | Mercedes-AMG GT3 | Riley Motorsports - WeatherTech Racing | 2:01.334 | 2:01.3580 | 2:01.8600 | 2:01.3340 | 2:01.8260 | 2:01.3970 |
| 40th | 93 | Wilkins / Legge / Lally | Acura NSX GT3 | Michael Shank Racing w/ Curb-Agajanian | 2:01.360 | 2:01.6870 | 2:02.5420 | 2:02.5650 | 2:01.9650 | 2:01.3600 |
| 41st | 73 | McMurry / Lindsey / Bergmeister / Heylen | Porsche 991 GT3 R | Park Place Motorsports | 2:01.440 | 2:01.9660 | 2:02.9820 | 2:01.9320 | 2:01.7050 | 2:01.4400 |
| 42nd | 27 | Sbirrazzuoli / Ruberti / Persiani / *DeGeorge | Lamborghini Huracán GT3 | Dream Racing Motorsport | 2:01.479 | 2:08.4690 | 2:02.3130 | 2:02.3080 | 2:02.7170 | 2:01.4790 |
| 43rd | 23 | Bell / Montecalvo / Sweedler | Audi R8 LMS GT3 | Alex Job Racing | 2:01.571 | 2:02.2340 | 2:03.3200 | 2:03.3340 | 2:01.6760 | 2:01.5710 |
| 44th | 86 | Negri / Segal / Dyer | Acura NSX GT3 | Michael Shank Racing w/ Curb-Agajanian | 2:02.001 | 2:02.0960 | 2:03.1230 | 2:02.0010 | 2:03.2670 | 2:07.7440 |
| 45th | 46 | Collard / Babini / Beretta / Busnelli | Lamborghini Huracán GT3 | Ebimotors | 2:02.142 | 2:03.2010 | 2:02.4130 | 2:02.4070 | 2:02.8490 | 2:02.1420 |
| 46th | 18 | Gdovic / Anassis / Massari | Lamborghini Huracán GT3 | DAC Motorsports | 2:03.535 | 2:04.1540 | 2:04.0540 | 2:03.5350 | 2:05.4600 | 2:03.7890 |