| 1st | 10 | Taylor / Taylor / Lynn | Cadillac DPi-V.R | Konica Minolta Cadillac DPi-V.R | 1:49.6000 | 197.6274 | 211 | 1:50.2280 | 1:49.6000 |
| 2nd | 5 | Albuquerque / Fittipaldi / Barbosa | Cadillac DPi-V.R | Mustang Sampling Racing | 1:49.6510 | 197.4665 | 201 | 1:49.7590 | 1:49.6510 |
| 3rd | 31 | Curran / Cameron / *Conway | Cadillac DPi-V.R | Whelen Engineering Racing | 1:49.6870 | 197.4665 | 174 | 1:50.0760 | 1:49.6870 |
| 4th | 85 | Simpson / Miller / Goikhberg | Oreca 07 Gibson | JDC-Miller Motorsports | 1:50.3480 | 196.1790 | 189 | 1:51.6810 | 1:50.3480 |
| 5th | 52 | Pla / Gutierrez / Guasch / *Kimber-Smith | Ligier JS P217 Gibson | PR1/Mathiasen Motorsports | 1:50.6820 | 195.6962 | 211 | 1:51.3130 | 1:50.6820 |
| 6th | 2 | Dalziel / Derani / Sharp / Brown | Nissan Onroak DPi | Tequila Patron ESM | 1:50.7670 | 195.5353 | 89 | 1:52.0100 | 1:50.7670 |
| 7th | 55 | Bomarito / Nunez / Pigot | Mazda RT24-P | Mazda Motorsports | 1:50.8280 | 195.3744 | 187 | 1:51.8680 | 1:50.8280 |
| 8th | 70 | Miller / Long / Franchitti | Mazda RT24-P | Mazda Motorsports | 1:51.6340 | 193.9259 | 158 | 1:52.8160 | 1:51.6340 |
| 9th | 22 | Van Overbeek / Brown / *Hartley | Nissan Onroak DPi | Tequila Patron ESM | 1:51.8320 | 193.6041 | 60 | 1:52.5910 | 1:51.8320 |
| 10th | 90 | van der Zande / Goossens / Rast | Riley Mk.30 Gibson | VisitFlorida Racing | 1:51.9880 | 193.4431 | 146 | 1:52.2770 | 1:51.9880 |
| 11th | 8 | Quinton / Mayer / *Rayhall | Oreca FLM 09 Chevrolet | Starworks Motorsports | 1:56.1200 | 186.5230 | 98 | 1:56.1200 | 1:56.2740 |
| 12th | 26 | Yacaman / Thompson / Ducote / Drumwright | Oreca FLM 09 Chevrolet | BAR 1 Motorsports | 1:56.4270 | 186.0402 | 222 | 1:57.4400 | 1:56.4270 |
| 13th | 3 | Magnussen / Rockenfeller / Garcia | Chevrolet Corvette C7.R | Corvette Racing | 1:58.5250 | 182.6605 | 265 | 1:59.4410 | 1:58.5250 |
| 14th | 912 | Werner / Pilet / Vanthoor | Porsche 991 RSR | Porsche GT Team | 1:58.5310 | 182.6605 | 252 | 1:59.4470 | 1:58.5310 |
| 15th | 67 | Briscoe / Westbrook / Dixon | Ford GT | Ford Chip Ganassi Racing | 1:58.6360 | 182.4996 | 201 | 1:59.1590 | 1:58.6360 |
| 16th | 66 | Hand / Bourdais / Müller | Ford GT | Ford Chip Ganassi Racing | 1:58.6600 | 182.4996 | 213 | 1:58.8940 | 1:58.6600 |
| 17th | 25 | Sims / Wittmer / Auberlen | BMW M6 GTLM | BMW Team RLL | 1:58.7950 | 182.3387 | 210 | 1:59.1830 | 1:58.7950 |
| 18th | 62 | Vilander / Calado / Montoya | Ferrari 488 GTE | Risi Competizione | 1:58.8090 | 182.3387 | 189 | 1:59.1860 | 1:58.8090 |
| 19th | 24 | Tomczyk / Edwards / Catsburg | BMW M6 GTLM | BMW Team RLL | 1:58.9520 | 182.0168 | 248 | 1:59.5990 | 1:58.9520 |
| 20th | 4 | Gavin / Fässler / Milner | Chevrolet Corvette C7.R | Corvette Racing | 1:58.9660 | 182.0168 | 287 | 1:59.3520 | 1:58.9660 |
| 21st | 54 | Braun / Jönsson / Bennett | Porsche 991 GT3 R | Core Autosport | 2:02.4760 | 176.8669 | 171 | 2:02.6910 | 2:02.4760 |
| 22nd | 29 | Mies / De Phillippi / Gounon | Audi R8 LMS GT3 | Montaplast by Land-Motorsport | 2:02.6620 | 176.5450 | 270 | 2:03.2790 | 2:02.6620 |
| 23rd | 57 | Davis / Aschenbach / Bell | Audi R8 LMS GT3 | Stevenson Motorsports | 2:02.7720 | 176.3841 | 161 | 2:03.1020 | 2:02.7720 |
| 24th | 73 | McMurry / Bergmeister / *Lindsey | Porsche 991 GT3 R | Park Place Motorsports | 2:02.8960 | 176.2232 | 156 | 2:03.1120 | 2:02.8960 |
| 25th | 28 | Pumpelly / Morad / de Quesada | Porsche 991 GT3 R | Alegra Motorsports | 2:02.9380 | 176.2232 | 164 | 2:03.1720 | 2:02.9380 |
| 26th | 48 | Sellers / Snow / von Moltke | Lamborghini Huracán GT3 | Paul Miller Racing | 2:03.0510 | 176.0622 | 133 | 2:04.1780 | 2:03.0510 |
| 27th | 23 | Bell / Montecalvo / Sweedler | Audi R8 LMS GT3 | Alex Job Racing | 2:03.1090 | 175.9013 | 205 | 2:03.4310 | 2:03.1090 |
| 28th | 27 | Ruberti / Sbirrazzuoli / DeGeorge | Lamborghini Huracán GT3 | Dream Racing Motorsport | 2:03.1440 | 175.9013 | 187 | 2:03.2930 | 2:03.1440 |
| 29th | 14 | Karam / Pruett / James / Alon | Lexus RCF GT3 | 3GT Racing | 2:03.1570 | 175.9013 | 188 | 2:03.2290 | 2:03.1570 |
| 30th | 11 | Bortolotti / Engelhart / Ineichen / Antinucci | Lamborghini Huracán GT3 | GRT Grasser Racing Team | 2:03.1770 | 175.7404 | 251 | 2:03.5960 | 2:03.1770 |
| 31st | 93 | Wilkins / Legge / Lally | Acura NSX GT3 | Michael Shank Racing w/Curb-Agajanian | 2:03.4090 | 175.4185 | 170 | 2:03.8760 | 2:03.4090 |
| 32nd | 46 | Babini / Busnelli | Lamborghini Huracán GT3 | Ebimotors | 2:03.4350 | 175.4185 | 207 | 2:03.9670 | 2:03.4350 |
| 33rd | 50 | Jeannette / MacNeil | Mercedes-AMG GT3 | Riley Motorsports - WeatherTech Racing | 2:03.4540 | 175.4185 | 196 | 2:03.5770 | 2:03.4540 |
| 34th | 75 | Said / Habul / Vautier | Mercedes-AMG GT3 | SunEnergy1 Racing | 2:03.5590 | 175.2576 | 170 | 2:03.7290 | 2:03.5590 |
| 35th | 86 | Segal / Negri / Dyer | Acura NSX GT3 | Michael Shank Racing w/Curb-Agajanian | 2:03.6840 | 175.0966 | 173 | 2:03.9210 | 2:03.6840 |
| 36th | 18 | Gdovic / Claman / Anassis / Massari | Lamborghini Huracán GT3 | DAC Motorsports | 2:04.2320 | 174.2920 | 176 | 2:05.8340 | 2:04.2320 |