| 1st | 60 | Pla / Pew / Negri | Ligier JS P2 Honda HPD | Michael Shank Racing w/Curb-Agajanian | 1:51.217 | 1:51.2170 | 1:52.3970 | 1:54.4570 | 1:54.1320 | 1:53.0670 |
| 2nd | 2 | Derani / Sharp / Brown / Van Overbeek | Ligier JS P2 Honda HPD | Tequila Patrón ESM | 1:51.391 | 1:51.3910 | 1:52.4190 | | 1:53.3120 | 1:53.6510 |
| 3rd | 31 | Curran / Cameron / Pruett | Chevrolet Corvette DP | Action Express Racing | 1:51.943 | 1:51.9430 | 1:52.8680 | 1:54.0980 | 1:52.4470 | 1:52.1350 |
| 4th | 5 | Barbosa / Fittipaldi / Albuquerque / Pruett | Chevrolet Corvette DP | Action Express Racing | 1:52.205 | 1:52.2050 | 1:53.1830 | 1:54.5230 | 1:52.8320 | 1:52.2280 |
| 5th | 81 | Minassian / Hedman / Lapierre | Oreca 05 Nissan | DragonSpeed | 1:52.588 | 1:54.1710 | 1:52.5880 | 1:56.2210 | 1:54.1800 | 1:57.2340 |
| 6th | 55 | Nunez / Bomarito / Pigot | Mazda Prototype | Mazda Motorsports | 1:52.951 | 1:52.9510 | 1:53.4150 | no time | 1:53.8820 | 1:53.2050 |
| 7th | 90 | Goossens / Dalziel / Hunter-Reay | Chevrolet Corvette DP | VisitFlorida Racing | 1:53.185 | 1:53.1850 | 1:53.5110 | 1:54.0670 | 1:54.2240 | 1:53.7900 |
| 8th | 70 | Long / Miller / Devlin / Ihara | Mazda Prototype | Mazda Motorsports | 1:53.513 | 1:53.5130 | 1:54.1340 | no time | 1:55.2190 | 1:55.0690 |
| 9th | 10 | Barrichello / Taylor / Taylor / Angelelli | Chevrolet Corvette DP | No. 10 Konica Minolta Corvette DP for Wayne Taylor Racing | 1:53.576 | 1:53.5760 | 1:53.9560 | no time | 1:54.0880 | 1:55.0370 |
| 10th | 24 | Morad / de Quesada / Lawrence / Farnbacher | Riley DP BMW Power | Alegra Motorsports | 1:54.193 | 1:54.1930 | 1:55.1180 | 1:55.2270 | 1:54.3340 | 1:54.7370 |
| 11th | 0 | Meyrick / Legge / Rayhall | DeltaWing DWC13 Elan | Panoz DeltaWing Racing | 1:54.274 | 1:54.2740 | 1:54.7660 | 1:54.8600 | 1:55.6280 | 1:55.5480 |
| 12th | 54 | Bennett / Braun / Wilkins | Oreca FLM 09 Chevrolet | Core Autosport | 1:54.910 | 1:54.9100 | 1:55.5450 | 1:57.8330 | 1:55.0770 | 1:55.0230 |
| 13th | 85 | Goikhberg / Miller / Simpson / Koch | Oreca FLM 09 Chevrolet | JDC-Miller Motorsports | 1:55.524 | 1:57.6300 | 1:56.5330 | 1:57.8970 | 1:57.1720 | 1:55.5240 |
| 14th | 52 | Kimber-Smith / Gutierrez / Alon | Oreca FLM 09 Chevrolet | PR1/Mathiasen Motorsports | 1:55.736 | 1:55.8430 | 1:55.7360 | 2:04.8450 | 1:56.2970 | 1:55.9250 |
| 15th | 38 | French / Marcelli / Norman | Oreca FLM 09 Chevrolet | Performance Tech Motorsports | 1:56.208 | 1:57.1890 | 1:56.2080 | 1:58.0400 | 1:57.7310 | 1:57.0870 |
| 16th | 20 | Mowlem / Lewis / Drumwright / Yount | Oreca FLM 09 Chevrolet | BAR1 Motorsports | 1:56.247 | 1:56.6610 | 1:56.2470 | 1:59.5840 | 1:57.2980 | 1:56.2680 |
| 17th | 8 | van der Zande / Popow / Heinemeier Hansson | Oreca FLM 09 Chevrolet | Starworks Motorsport | 1:56.329 | 1:57.2410 | 1:56.4540 | 1:56.3390 | 1:56.3290 | 1:56.8790 |
| 18th | 88 | Johnston / Lyons / Engel | Oreca FLM 09 Chevrolet | Starworks Motorsport | 1:56.881 | 1:58.2180 | 1:58.4020 | 1:56.8810 | 1:57.0870 | 1:57.9920 |
| 19th | 50 | Pace / Defoor / Hinton / Schroeder | Riley DP BMW Power | Highway to Help | 1:56.999 | 1:57.4220 | 1:58.2360 | | 1:56.9990 | 1:57.3590 |
| 20th | 25 | Auberlen / Werner / Spengler | BMW M6 GTLM | BMW Team RLL | 1:57.751 | 1:58.4020 | 1:59.1820 | 2:01.2520 | 1:59.3270 | 1:57.7510 |
| 21st | 3 | Garcia / Magnussen / Rockenfeller | Chevrolet Corvette C7.R | Corvette Racing | 1:58.094 | 1:58.8560 | 1:59.4810 | 2:00.4730 | 2:00.0700 | 1:58.0940 |
| 22nd | 62 | Vilander / Fisichella / Rigon | Ferrari 488 GTE | Risi Competizione | 1:58.291 | 1:59.0200 | 1:59.8830 | 1:59.8370 | 1:59.9820 | 1:58.2910 |
| 23rd | 4 | Milner / Gavin / Fässler | Chevrolet Corvette C7.R | Corvette Racing | 1:58.448 | 1:58.8780 | 1:59.4710 | 1:59.9890 | 2:00.4030 | 1:58.4480 |
| 24th | 100 | Edwards / Luhr / Wittmer | BMW M6 GTLM | BMW Team RLL | 1:58.468 | 1:58.5920 | 1:59.4150 | 1:59.1680 | 1:59.2700 | 1:58.4680 |
| 25th | 68 | Bertolini / Serra / Pier Guidi | Ferrari 488 GTE | Scuderia Corsa | 1:58.551 | 1:58.6370 | 1:59.7250 | no time | 2:00.2820 | 1:58.5510 |
| 26th | 67 | Westbrook / Briscoe / Dixon | Ford GT | Ford Chip Ganassi Racing | 1:58.708 | 1:58.7080 | 1:59.6510 | 2:02.0160 | 1:59.9980 | 1:59.1240 |
| 27th | 912 | Makowiecki / Bamber / Christensen | Porsche 991 RSR | Porsche North America | 1:58.820 | 1:59.1700 | 1:59.6670 | 2:00.8860 | 1:59.6330 | 1:58.8200 |
| 28th | 911 | Pilet / Tandy / Estre | Porsche 991 RSR | Porsche North America | 1:59.009 | 1:59.0090 | 1:59.8900 | 2:01.7180 | 1:59.6420 | 1:59.2930 |
| 29th | 66 | Hand / Bourdais / Müller | Ford GT | Ford Chip Ganassi Racing | 1:59.053 | 1:59.0530 | 1:59.8940 | 2:05.1580 | 2:00.2170 | 1:59.2310 |
| 30th | 16 | Pumpelly / Lewis / Carter | Lamborghini Huracán GT3 | Change Racing | 2:02.263 | 2:03.4550 | 2:03.6680 | 2:05.1540 | 2:03.4910 | 2:02.2630 |
| 31st | 98 | Dalla Lana / Lamy / Lauda / Stanaway | Aston Martin Vantage GT3 | Aston Martin Racing | 2:02.289 | 2:04.2040 | 2:03.1840 | | 2:03.6920 | 2:02.2890 |
| 32nd | 23 | Riberas / Farnbacher / James | Porsche 991 GT3 R | Team Seattle / Alex Job Racing | 2:02.295 | 2:03.0370 | 2:03.2700 | 2:04.6990 | 2:03.4550 | 2:02.2950 |
| 33rd | 63 | Segal / Nielsen / Balzan | Ferrari 488 GT3 | Scuderia Corsa | 2:02.350 | 2:02.3500 | 2:02.8100 | | 2:03.6980 | 2:02.8430 |
| 34th | 33 | Bleekemolen / Keating / Miller | Dodge Viper GT3-R | Riley Motorsports | 2:02.353 | 2:02.3860 | 2:03.5140 | 2:05.1080 | 2:02.9010 | 2:02.3530 |
| 35th | 22 | Keen / MacNeil / Jeannette | Porsche 991 GT3 R | Alex Job Racing | 2:02.373 | 2:03.2410 | 2:03.9790 | 2:04.2370 | 2:03.9370 | 2:02.3730 |
| 36th | 73 | McMurry / Lindsey / Bergmeister / Heylen | Porsche 991 GT3 R | Park Place Motorsports | 2:02.425 | 2:03.2840 | 2:03.6520 | 2:07.2650 | 2:02.9470 | 2:02.4250 |
| 37th | 11 | Sweedler / Bell / Antinucci | Lamborghini Huracán GT3 | Change Racing | 2:02.585 | 2:03.8610 | 2:05.6860 | 2:05.0820 | 2:05.6300 | 2:02.5850 |
| 38th | 44 | Potter / Lally / Seefried | Audi R8 LMS GT3 | Magnus Racing | 2:02.650 | 2:04.8570 | 2:03.3630 | no time | 2:02.9110 | 2:02.6500 |
| 39th | 96 | Curtis / Freiberg / Klingmann | BMW M6 GT3 | Turner Motorsport | 2:02.660 | 2:02.6600 | 2:03.8560 | 2:05.6870 | 2:03.6210 | 2:03.4220 |
| 40th | 97 | Krohn / Palttala / Marsal | BMW M6 GT3 | Turner Motorsport | 2:02.670 | 2:03.6250 | 2:03.8030 | 2:03.7350 | 2:04.0330 | 2:02.6700 |
| 41st | 48 | Miller / Sellers / Snow | Lamborghini Huracán GT3 | Paul Miller Racing | 2:02.867 | 2:04.2600 | 2:03.6250 | 2:02.9130 | 2:04.0630 | 2:02.8670 |
| 42nd | 6 | Davis / Liddell / De Phillippi | Audi R8 LMS GT3 | Stevenson Motorsports | 2:02.955 | no time | 2:03.8190 | 2:04.6990 | 2:02.9550 | 2:03.1650 |
| 43rd | 51 | Giammaria / Cressoni / Mann | Ferrari 458 | Spirit of Race | 2:03.061 | 2:03.3400 | 2:03.4970 | 2:03.6460 | 2:03.6520 | 2:03.0610 |
| 44th | 45 | Kaffer / Krohn / Jönsson | Audi R8 LMS Ultra | Flying Lizard Motorsports | 2:03.140 | 2:07.3380 | 2:04.2110 | 2:04.1740 | 2:03.1400 | 2:04.8310 |
| 45th | 540 | Pappas / Catsburg / Long / Pilgrim | Porsche 991 GT3 R | Black Swan Racing | 2:03.173 | 2:07.0950 | 2:04.0180 | 2:05.2960 | 2:03.1730 | 2:04.8340 |
| 46th | 27 | Babini / Ruberti / Sbirrazzuoli / Persiani | Lamborghini Huracán GT3 | Dream Racing | 2:03.246 | 2:03.9330 | 2:04.1520 | 2:04.2660 | 2:04.3210 | 2:03.2460 |
| 47th | 9 | Aschenbach / Bell / von Moltke | Audi R8 LMS GT3 | Stevenson Motorsports | 2:03.654 | 2:03.8560 | 2:03.7680 | 2:05.2450 | 2:03.6540 | 2:03.7410 |
| 48th | 21 | Zöchling / Ehret / Krebs | Lamborghini Huracán GT3 | Konrad Motorsport | 2:03.748 | 2:03.8220 | | | 2:05.3680 | 2:03.7480 |
| 49th | 28 | Brück / Borcheller / Konrad / Webster | Lamborghini Huracán GT3 | Konrad Motorsport | 2:04.197 | 2:04.3020 | 2:04.1970 | 2:04.7960 | 2:04.7070 | 2:04.2190 |