| 1st | 5 | Barbosa / Albuquerque / Fittipaldi | Cadillac DPi-V.R | Mustang Sampling Racing | 1:36.269 | 1:36.9030 | 1:36.2690 | 1:37.9050 | 1:38.1520 |
| 2nd | 10 | Taylor / Angelelli / Taylor / Gordon | Cadillac DPi-V.R | Konica Minolta Cadillac DPi-V.R | 1:36.394 | 1:37.1690 | 1:36.3940 | 1:37.7570 | 1:36.9700 |
| 3rd | 31 | Cameron / Curran / Morris / Conway | Cadillac DPi-V.R | Whelen Engineering Racing | 1:36.793 | 1:36.9730 | 1:36.7930 | 1:39.0270 | 1:39.2630 |
| 4th | 13 | Jani / Buemi / Sarrazin / Heidfeld | Oreca 07 Gibson | Rebellion Racing | 1:37.123 | 1:37.1230 | 1:37.4400 | 1:39.9980 | 1:38.7060 |
| 5th | 22 | Van Overbeek / Hartley / Senna / Brown | Nissan Onroak DPi | Tequila Patron ESM | 1:37.609 | 1:37.6090 | 1:37.8320 | 1:38.9430 | 1:40.2200 |
| 6th | 81 | Lapierre / Hanley / Duval / Hedman | Oreca 07 Gibson | DragonSpeed | 1:37.907 | no time | 1:37.9070 | 1:40.3560 | 1:37.9220 |
| 7th | 2 | Sharp / Dalziel / Derani / *Hartley | Nissan Onroak DPi | Tequila Patron ESM | 1:38.251 | 1:38.2510 | 1:39.2350 | 1:39.0110 | 1:39.4070 |
| 8th | 85 | Simpson / Beche / Goikhberg / Miller | Oreca 07 Gibson | JDC-Miller Motorsports | 1:38.542 | 1:38.9150 | 1:38.5420 | 1:40.1830 | 1:39.4390 |
| 9th | 90 | Goossens / van der Zande / Rast | Riley Mk.30 Gibson | VisitFlorida Racing | 1:38.944 | 1:40.5320 | 1:39.1830 | 1:40.9320 | 1:38.9440 |
| 10th | 52 | Kimber-Smith / Gutierrez / Enerson / Guasch | Ligier JS P217 Gibson | PR1/Mathiasen Motorsports | 1:39.149 | 1:39.1490 | 1:39.3910 | 1:40.5340 | 1:40.6010 |
| 11th | 55 | Bomarito / Pigot / Nunez | Mazda RT24-P | Mazda Motorsports | 1:39.457 | 1:39.9400 | 1:39.4570 | 1:41.4620 | no time |
| 12th | 70 | Miller / Hinchcliffe / Long | Mazda RT24-P | Mazda Motorsports | 1:39.646 | 1:39.9730 | 1:39.6460 | 1:41.2990 | no time |
| 13th | 38 | French / O'Ward / Masson / Boulle | Oreca FLM 09 Chevrolet | Performance Tech Motorsports | 1:42.559 | 1:42.5590 | 1:42.7160 | 1:43.6340 | no time |
| 14th | 20 | Rice / Yacaman / Yount / Kvamme / Ducote | Oreca FLM 09 Chevrolet | BAR1 Motorsports | 1:43.164 | 1:43.5150 | 1:43.3220 | 1:43.6680 | 1:43.1640 |
| 15th | 67 | Westbrook / Briscoe / Dixon | Ford GT | Ford Chip Ganassi Racing | 1:43.385 | 1:43.7040 | 1:43.3850 | 1:44.2420 | 1:43.7890 |
| 16th | 26 | Mowlem / Hindman / Papadopoulos / Merzon / Cheng | Oreca FLM 09 Chevrolet | BAR1 Motorsports | 1:43.396 | 1:43.3960 | 1:43.5880 | 1:44.1750 | 1:44.9510 |
| 17th | 88 | Popow / Rayhall / Dayson / Daly / *Mayer | Oreca FLM 09 Chevrolet | Starworks Motorsport | 1:43.400 | 1:47.6820 | 1:43.4000 | 1:45.5940 | 1:43.9170 |
| 18th | 69 | Priaulx / Kanaan / Tincknell | Ford GT | Ford Chip Ganassi Team UK | 1:43.453 | 1:44.2560 | 1:43.4530 | 1:44.5720 | 1:45.0390 |
| 19th | 66 | Hand / Müller / Bourdais | Ford GT | Ford Chip Ganassi Racing | 1:43.473 | 1:43.4730 | 1:43.5220 | 1:44.4210 | 1:43.4900 |
| 20th | 911 | Pilet / Makowiecki / Werner | Porsche 991 RSR | Porsche GT Team | 1:43.543 | 1:44.2510 | 1:43.9640 | 1:44.3060 | 1:43.5430 |
| 21st | 68 | Pla / Mücke / Johnson | Ford GT | Ford Chip Ganassi Team UK | 1:43.610 | 1:43.9870 | 1:43.6100 | 1:44.2450 | 1:44.7510 |
| 22nd | 8 | Cumming / Falb / Ruscitti / Wickens / Keating | Oreca FLM 09 Chevrolet | Starworks Motorsport | 1:43.650 | 1:46.6280 | 1:44.2980 | 1:44.4580 | 1:43.6500 |
| 23rd | 62 | Vilander / Fisichella / Calado | Ferrari 488 GTE | Risi Competizione | 1:43.654 | 1:44.1210 | 1:43.6540 | 1:44.5330 | 1:44.2560 |
| 24th | 3 | Magnussen / Garcia / Rockenfeller | Chevrolet Corvette C7.R | Corvette Racing | 1:43.884 | 1:44.3590 | 1:43.9790 | 1:44.4650 | 1:43.8840 |
| 25th | 912 | Estre / Vanthoor / Lietz | Porsche 991 RSR | Porsche GT Team | 1:43.979 | 1:44.5910 | 1:43.9790 | 1:44.2840 | 1:44.3840 |
| 26th | 4 | Gavin / Fässler / Milner | Chevrolet Corvette C7.R | Corvette Racing | 1:44.038 | 1:44.6850 | 1:44.0380 | 1:45.1110 | 1:44.5280 |
| 27th | 19 | Farfus / Auberlen / Sims / Spengler | BMW M6 GTLM | BMW Team RLL | 1:44.247 | 1:44.7590 | 1:44.2470 | 1:44.6730 | 1:44.5200 |
| 28th | 24 | Edwards / *Catsburg / *Tomczyk / *Wittmer | BMW M6 GTLM | BMW Team RLL | 1:44.417 | 1:44.9740 | 1:44.6940 | 1:45.4930 | 1:44.4170 |
| 29th | 51 | Pier Guidi / Mann / Mastronardi / *Mediani / *Rigon | Ferrari 488 GT3 | Spirit of Race | 1:46.972 | 1:47.0990 | 1:46.9720 | 1:47.1940 | 1:48.2120 |
| 30th | 59 | Cairoli / Smith / Proczyk / *Müller / *Renger | Porsche 991 GT3 R | Manthey Racing | 1:47.037 | 1:47.7360 | 1:47.0370 | 1:48.3550 | 1:48.2160 |
| 31st | 63 | Balzan / Cressoni / Bird / Nielsen | Ferrari 488 GT3 | Scuderia Corsa | 1:47.079 | 1:47.1170 | 1:47.0790 | 1:47.5470 | 1:47.7010 |
| 32nd | 11 | Bortolotti / Ineichen / Engelhart / Pérez Companc | Lamborghini Huracán GT3 | GRT Grasser Racing Team | 1:47.095 | 1:47.7850 | 1:47.0950 | 1:48.3350 | 1:50.6600 |
| 33rd | 73 | McMurry / Lindsey / Siedler / *Bergmeister | Porsche 991 GT3 R | Park Place Motorsports | 1:47.135 | 1:48.4240 | 1:47.3470 | 1:47.1350 | 1:49.4860 |
| 34th | 98 | Sørensen / Lauda / Dalla Lana / Lamy | Aston Martin Vantage | Aston Martin Racing | 1:47.245 | 1:47.7340 | 1:47.2450 | 1:48.1210 | 1:47.8260 |
| 35th | 23 | Kaffer / Bell / Montecalvo / Sweedler | Audi R8 LMS GT3 | Alex Job Racing | 1:47.298 | 1:48.7980 | 1:47.2980 | 1:49.0280 | 1:47.8200 |
| 36th | 29 | Schmidt / De Phillippi / Gounon / Mies | Audi R8 LMS GT3 | Montaplast by Land-Motorsport | 1:47.313 | 1:48.2130 | 1:47.3130 | 1:48.0490 | 1:47.5630 |
| 37th | 48 | Sellers / Snow / von Moltke / Caldarelli / Miller | Lamborghini Huracán GT3 | Paul Miller Racing | 1:47.455 | 1:48.4960 | 1:48.3550 | 1:48.6720 | 1:47.4550 |
| 38th | 96 | Marks / Krohn / Klingmann / Martin | BMW M6 GT3 | Turner Motorsport | 1:47.457 | 1:48.8100 | 1:47.4570 | 1:48.7170 | 1:47.9440 |
| 39th | 50 | MacNeil / Jäger / Van Gisbergen / Jeannette | Mercedes-AMG GT3 | Riley Motorsports - WeatherTech | 1:47.488 | 1:49.8090 | 1:47.4880 | 1:48.4500 | 1:48.0070 |
| 40th | 33 | Keating / Bleekemolen / Farnbacher / Christodoulou | Mercedes-AMG GT3 | Riley Motorsports - Team AMG | 1:47.511 | 1:49.0560 | 1:47.8280 | 1:48.6140 | 1:47.5110 |
| 41st | 16 | Lewis / Mul / Sandberg / *Grala | Lamborghini Huracán GT3 | Change Racing | 1:47.520 | 1:48.5900 | 1:48.4670 | 1:48.5840 | 1:47.5200 |
| 42nd | 46 | Busnelli / Babini / Collard / Perrodo | Lamborghini Huracán GT3 | Ebimotors | 1:47.577 | 1:49.7810 | 1:47.5770 | 1:49.3960 | 1:48.4180 |
| 43rd | 75 | Said / Engel / Habul / Vautier / *Morris | Mercedes-AMG GT3 | SunEnergy1 Racing | 1:47.586 | 1:48.9690 | 1:47.7140 | 1:48.6870 | 1:47.5860 |
| 44th | 54 | Bennett / Jönsson / Long / Braun | Porsche 991 GT3 R | Core Autosport | 1:47.705 | 1:50.2580 | 1:47.7050 | 1:48.4060 | no time |
| 45th | 28 | Morad / Christensen / Lazare / de Quesada / de Quesada | Porsche 991 GT3 R | Alegra Motorsports | 1:47.747 | 1:48.3410 | 1:47.7470 | 1:48.1520 | 1:48.6340 |
| 46th | 991 | Hedlund / Henzler / Heylen / Pappas / Creel | Porsche 991 GT3 R | TRG | 1:47.753 | 1:49.4460 | 1:47.7530 | 1:50.2690 | 1:48.5170 |
| 47th | 93 | Lally / Wilkins / Legge / Rahal | Acura NSX GT3 | Michael Shank Racing w/ Curb-Agajanian | 1:47.760 | 1:48.2680 | 1:47.7600 | 1:48.6580 | 1:48.3290 |
| 48th | 86 | Segal / Dyer / Negri / Hunter-Reay | Acura NSX GT3 | Michael Shank Racing w/ Curb-Agajanian | 1:47.796 | 1:48.3500 | 1:47.7960 | 1:49.2790 | 1:48.3480 |
| 49th | 27 | DeGeorge / Giammaria / Ruberti / Sbirrazzuoli / Persiani | Lamborghini Huracán GT3 | Dream Racing Motorsport | 1:47.863 | 1:55.8350 | 1:47.8630 | 1:48.6810 | 1:48.0900 |
| 50th | 61 | Engelhart / Beretta / Pampanini / Ineichen / Pavlovic | Lamborghini Huracán GT3 | GRT Grasser Racing Team | 1:47.864 | 1:48.4830 | 1:47.9080 | 1:47.8640 | 1:49.9200 |
| 51st | 57 | Davis / Bell / Aschenbach / Liddell | Audi R8 LMS GT3 | Stevenson Motorsports | 1:47.932 | 1:48.6830 | 1:47.9320 | 1:48.9270 | 1:48.0730 |
| 52nd | 15 | Cindric / Hawksworth / Farnbacher / Alon | Lexus RCF GT3 | 3GT Racing | 1:48.241 | 1:49.1300 | 1:48.4120 | 1:48.2410 | 1:48.8740 |
| 53rd | 14 | Pruett / *Menezes / *James / *Karam | Lexus RCF GT3 | 3GT Racing | 1:48.298 | 1:48.5410 | 1:48.2980 | 1:49.1170 | 1:49.0860 |
| 54th | 21 | Mapelli / Stolz / Willsey / Basseng / *Konrad | Lamborghini Huracán GT3 | Konrad Motorsport | 1:48.410 | 1:49.3220 | 1:48.4100 | 1:49.3710 | 1:48.6450 |
| 55th | 18T | Anassis / Gdovic / Claman / Massari | Lamborghini Huracán GT3 | DAC Motorsports | 1:49.077 | 1:51.5170 | 1:49.0770 | | |
| 56th | 18 | Anassis / Gdovic / Claman / Massari | Lamborghini Huracán GT3 | DAC Motorsports | 1:51.256 | 1:51.5170 | | 1:51.2560 | 1:53.3210 |