| 1st | 6 | Castroneves / Montoya / Pagenaud | Oreca 07 Gibson | Team Penske | 1:11.314 | 1:11.3140 | 1:13.1150 | 1:25.2900 | 1:12.4450 | 1:11.9680 |
| 2nd | 22 | Derani / Senna / Van Overbeek | Nissan Onroak DPi | Tequila Patron ESM | 1:11.475 | 1:11.4750 | 1:12.5630 | 1:26.7950 | 1:12.5270 | 1:12.0190 |
| 3rd | 2 | Hartley / Dalziel / Sharp | Nissan Onroak DPi | Tequila Patron ESM | 1:11.499 | 1:11.4990 | 1:12.6120 | 1:31.2650 | 1:12.0170 | 1:11.9910 |
| 4th | 13 | Beche / Menezes / Heidfeld | Oreca 07 Gibson | Rebellion Racing | 1:11.623 | 1:11.6230 | 1:12.9620 | 1:26.2280 | 1:12.5410 | 1:12.7380 |
| 5th | 90 | van der Zande / Bomarito / Goossens | Ligier JS P217 Gibson | Visit Florida Racing | 1:11.934 | 1:11.9340 | 1:13.4450 | no time | 1:12.4880 | 1:12.0310 |
| 6th | 52 | Pla / Gutierrez / *Canal | Ligier JS P217 Gibson | PR1/Mathiasen Motorsports | 1:12.106 | 1:12.1060 | 1:13.4760 | 1:31.4890 | 1:13.2310 | 1:13.0430 |
| 7th | 10 | Taylor / Hunter-Reay / *Taylor | Cadillac DPi-V.R | Konica Minolta Cadillac DPi-V.R | 1:12.121 | 1:12.1210 | 1:13.1020 | no time | 1:12.6830 | 1:12.3830 |
| 8th | 5 | Fittipaldi / Albuquerque / Barbosa | Cadillac DPi-V.R | Mustang Sampling Racing | 1:12.327 | 1:12.3930 | 1:13.0760 | no time | 1:12.3270 | 1:12.7910 |
| 9th | 85 | Goikhberg / Simpson / Miller | Oreca 07 Gibson | JDC-Miller Motorsports | 1:12.388 | 1:12.3880 | 1:13.2410 | no time | 1:12.9940 | 1:13.1600 |
| 10th | 31 | Curran / Cameron / Conway | Cadillac DPi-V.R | Whelen Engineering Racing | 1:12.694 | 1:13.0510 | 1:12.9660 | no time | 1:12.6940 | 1:12.9640 |
| 11th | 38 | French / O'Ward / Masson | Oreca FLM 09 Chevrolet | Performance Tech Motorsports | 1:16.069 | 1:16.0690 | 1:16.1370 | 1:28.2250 | 1:16.3280 | 1:16.1990 |
| 12th | 26 | Grist / Falb / Drissi | Oreca FLM 09 Chevrolet | BAR1 Motorsports | 1:16.722 | 1:17.2440 | 1:17.3410 | 1:35.4330 | 1:17.8700 | 1:16.7220 |
| 13th | 20 | Yount / Burkett / Rice | Oreca FLM 09 Chevrolet | BAR1 Motorsports | 1:17.067 | 1:17.6280 | 1:17.0670 | no time | 1:17.1470 | 1:17.6990 |
| 14th | 62 | Vilander / Pier Guidi / Fisichella | Ferrari 488 GTE | Risi Competizione | 1:17.497 | 1:17.6600 | 1:18.4310 | 1:31.5950 | 1:18.3340 | 1:17.4970 |
| 15th | 3 | Garcia / Magnussen / Rockenfeller | Chevrolet Corvette C7.R | Corvette Racing | 1:17.517 | 1:17.7140 | 1:18.5320 | no time | 1:18.3280 | 1:17.5170 |
| 16th | 24 | Tomczyk / Edwards / Catsburg | BMW M6 GTLM | BMW Team RLL | 1:17.683 | 1:18.0840 | 1:18.4910 | no time | 1:17.9420 | 1:17.6830 |
| 17th | 67 | Westbrook / Briscoe / Dixon | Ford GT | Ford Chip Ganassi Racing | 1:17.705 | 1:17.7050 | 1:18.5580 | no time | 1:18.2330 | 1:18.2960 |
| 18th | 66 | Hand / Bourdais / Müller | Ford GT | Ford Chip Ganassi Racing | 1:17.729 | 1:17.7290 | 1:18.6120 | 1:35.5720 | 1:18.2610 | 1:18.0220 |
| 19th | 25 | Auberlen / Sims / Wittmer | BMW M6 GTLM | BMW Team RLL | 1:17.731 | 1:17.7310 | 1:18.4660 | no time | 1:17.8180 | 1:18.0710 |
| 20th | 4 | Milner / Gavin / Fässler | Chevrolet Corvette C7.R | Corvette Racing | 1:17.758 | 1:17.8230 | 1:18.6630 | 1:29.7840 | 1:18.0930 | 1:17.7580 |
| 21st | 912 | Bruni / Bamber / Vanthoor | Porsche 991 RSR | Porsche GT Team | 1:18.161 | 1:18.1610 | 1:18.6210 | 1:29.0860 | 1:18.2680 | 1:18.2540 |
| 22nd | 911 | Pilet / Tandy / Werner | Porsche 991 RSR | Porsche GT Team | 1:18.287 | 1:18.4260 | 1:18.5880 | 1:28.9050 | 1:18.5080 | 1:18.2870 |
| 23rd | 15 | Hawksworth / Cindric / Pruett | Lexus RCF GT3 | 3GT Racing | 1:20.031 | 1:20.7980 | 1:21.6160 | no time | 1:20.0310 | 1:20.7990 |
| 24th | 29 | De Phillippi / Mies / van der Linde | Audi R8 LMS GT3 | Montaplast by Land-Motorsport | 1:20.175 | 1:20.8300 | 1:21.1480 | 1:32.4210 | 1:20.2570 | 1:20.1750 |
| 25th | 63 | Cressoni / Balzan / Nielsen | Ferrari 488 GT3 | Scuderia Corsa | 1:20.240 | 1:20.6610 | 1:21.1970 | no time | 1:20.7490 | 1:20.2400 |
| 26th | 93 | Lally / Legge / Wilkins | Acura NSX GT3 | Michael Shank Racing w/ Curb-Agajanian | 1:20.308 | 1:20.7390 | 1:21.1840 | no time | 1:20.3080 | 1:20.4300 |
| 27th | 16 | Mul / Lewis / Sandberg | Lamborghini Huracán GT3 | Change Racing | 1:20.408 | 1:21.0630 | 1:21.7760 | 1:31.5550 | 1:20.4080 | 1:20.7100 |
| 28th | 28 | Christensen / Morad / de Quesada | Porsche 991 GT3 R | Alegra Motorsports | 1:20.411 | 1:20.9680 | 1:21.6890 | 1:35.1100 | 1:20.4110 | 1:20.6260 |
| 29th | 14 | Karam / Alon / James | Lexus RCF GT3 | 3GT Racing | 1:20.416 | 1:21.1150 | 1:21.8950 | no time | 1:20.4720 | 1:20.4160 |
| 30th | 48 | Snow / Sellers / Hindman | Lamborghini Huracán GT3 | Paul Miller Racing | 1:20.442 | 1:21.3930 | 1:21.3030 | 1:35.1510 | 1:20.8560 | 1:20.4420 |
| 31st | 96 | Marks / Krohn / Klingmann | BMW M6 GT3 | Turner Motorsport | 1:20.490 | 1:20.9040 | 1:21.3550 | 1:30.7460 | 1:20.4900 | 1:20.5040 |
| 32nd | 73 | Lindsey / Bergmeister / McMurry | Porsche 991 GT3 R | Park Place Motorsports | 1:20.499 | 1:21.4700 | 1:21.4780 | 1:30.6660 | 1:20.4990 | 1:20.6580 |
| 33rd | 57 | Davis / Aschenbach / Bell | Audi R8 LMS GT3 | Stevenson Motorsports | 1:20.543 | 1:21.2200 | 1:21.4910 | no time | 1:20.6030 | 1:20.5430 |
| 34th | 33 | Keating / Bleekemolen / Farnbacher | Mercedes-AMG GT3 | Riley Motorsports - Team AMG | 1:20.739 | 1:21.9590 | 1:21.5300 | no time | 1:21.1530 | 1:20.7390 |
| 35th | 86 | Negri / Segal / Dyer | Acura NSX GT3 | Michael Shank Racing w/ Curb-Agajanian | 1:20.879 | 1:20.9980 | 1:21.5840 | 1:36.5820 | 1:20.8790 | 1:21.0820 |
| 36th | 54 | Bennett / Braun / Jönsson | Porsche 991 GT3 R | CORE autosport | 1:20.892 | 1:23.3790 | 1:21.8880 | no time | 1:20.8920 | 1:21.5820 |
| 37th | 23 | Bell / Montecalvo / Sweedler | Audi R8 LMS GT3 | Alex Job Racing | 1:21.010 | 1:21.6480 | 1:22.1410 | no time | 1:21.0100 | 1:21.3500 |
| 38th | 75 | von Moltke / Habul / Vautier | Mercedes-AMG GT3 | SunEnergy1 Racing | 1:21.047 | 1:21.9150 | 1:22.1810 | 1:34.9710 | 1:21.0470 | 1:21.6720 |
| 39th | 50 | MacNeil / *Long / *Jeannette | Porsche 991 GT3 R | Riley Motorsports - WeatherTech Racing | 1:21.290 | 1:22.1770 | 1:28.6840 | 1:38.2600 | 1:21.6330 | 1:21.2900 |