| 1st | 60 | Pla / Pew / Negri | Ligier JS P2 Honda HPD | Michael Shank Racing w/Curb-Agajanian | 1:12.618 | 1:13.0610 | 1:13.4780 | no time | 1:13.5410 | 1:12.6180 |
| 2nd | 55 | Nunez / Bomarito / Pigot | Mazda Prototype | Mazda Motorsports | 1:13.511 | 1:13.5200 | 1:14.1970 | | 1:14.0370 | 1:13.5110 |
| 3rd | 2 | van Overbeek / Sharp / Derani | Ligier JS P2 Honda HPD | Tequila Patron ESM | 1:13.654 | 1:14.3600 | 1:14.1940 | 1:16.1180 | 1:14.5250 | 1:13.6540 |
| 4th | 31 | Cameron / Curran / Pagenaud | Chevrolet Corvette DP | Action Express Racing | 1:13.903 | 1:13.9030 | 1:14.2600 | 1:19.3570 | 1:14.4090 | 1:14.3970 |
| 5th | 70 | Long / Miller / Pigot | Mazda Prototype | Mazda Motorsports | 1:14.061 | 1:14.0610 | 1:14.2350 | | 1:14.1420 | 1:14.5220 |
| 6th | 90 | Dalziel / Goossens / Hunter-Reay | Chevrolet Corvette DP | VisitFlorida Racing | 1:14.070 | 1:14.2760 | 1:14.7740 | 1:14.8250 | 1:14.6940 | 1:14.0700 |
| 7th | 5 | Fittipaldi / Barbosa / Albuquerque | Chevrolet Corvette DP | Action Express Racing | 1:14.160 | 1:14.1600 | 1:14.4070 | 1:14.9280 | 1:14.2150 | 1:14.2320 |
| 8th | 10 | Taylor / Taylor / Angelelli | Chevrolet Corvette DP | No. 10 Konica Minolta Corvette DP for Wayne Taylor Racing | 1:14.416 | 1:14.5330 | 1:14.6600 | 1:14.5730 | 1:14.6230 | 1:14.4160 |
| 9th | 0 | Meyrick / Legge / Rayhall | DeltaWing DWC13 | Panoz DeltaWing Racing | 1:14.446 | 1:14.4460 | 1:15.0680 | no time | 1:15.5410 | 1:15.2500 |
| 10th | 38 | Koch / French / Marcelli | Oreca FLM 09 Chevrolet | Performance Tech Motorsports | 1:15.925 | 1:16.6400 | 1:16.6550 | 1:16.9770 | 1:17.3240 | 1:15.9250 |
| 11th | 8 | Popow / van der Zande / Heinemeier Hansson | Oreca FLM 09 Chevrolet | Starworks Motorsport | 1:16.235 | 1:16.4700 | 1:16.9210 | | 1:16.2350 | 1:16.5020 |
| 12th | 52 | Alon / Gutierrez / Kimber-Smith | Oreca FLM 09 Chevrolet | PR1/Mathiasen Motorsports | 1:16.368 | 1:16.4110 | 1:16.7030 | 1:18.3960 | 1:16.8780 | 1:16.3680 |
| 13th | 20 | Drissi / Yount / Mowlem | Oreca FLM 09 Chevrolet | BAR1 Motorsports | 1:16.495 | 1:16.4950 | 1:17.1050 | 1:17.7730 | 1:16.7070 | 1:16.5190 |
| 14th | 7 | Coletti / Davison / Lall | Oreca FLM 09 Chevrolet | Starworks Motorsport | 1:16.580 | 1:16.8580 | 1:17.3950 | no time | 1:16.5800 | 1:17.1880 |
| 15th | 85 | Miller / Goikhberg / Simpson | Oreca FLM 09 Chevrolet | JDC-Miller Motorsports | 1:16.654 | 1:17.2050 | 1:16.8370 | 1:22.8810 | 1:16.6540 | no time |
| 16th | 88 | Kvamme / Hanratty / Bradley | Oreca FLM 09 Chevrolet | Starworks Motorsport | 1:17.229 | 1:19.4070 | 1:17.7240 | 1:19.6010 | 1:17.2290 | 1:17.4270 |
| 17th | 68 | Bertolini / Serra / Pier Guidi | Ferrari 488 GTE | Scuderia Corsa | 1:17.693 | 1:18.3490 | 1:18.7720 | no time | 1:18.3010 | 1:17.6930 |
| 18th | 62 | Vilander / Fisichella / Calado | Ferrari 488 GTE | Risi Competizione | 1:17.895 | 1:18.2940 | 1:18.7490 | 1:19.8440 | 1:18.5490 | 1:17.8950 |
| 19th | 67 | Westbrook / Briscoe / Dixon | Ford GT | Ford Chip Ganassi Racing | 1:17.906 | 1:18.1310 | 1:18.7090 | 1:19.7750 | 1:18.4120 | 1:17.9060 |
| 20th | 3 | Garcia / Magnussen / Rockenfeller | Chevrolet Corvette C7.R | Corvette Racing | 1:17.941 | 1:18.2830 | 1:18.9120 | 1:20.4140 | 1:18.6910 | 1:17.9410 |
| 21st | 100 | Edwards / Luhr / Wittmer | BMW M6 GTLM | BMW Team RLL | 1:18.033 | 1:18.3820 | 1:18.8850 | 1:19.7360 | 1:18.8040 | 1:18.0330 |
| 22nd | 66 | Hand / Bourdais / Müller | Ford GT | Ford Chip Ganassi Racing | 1:18.098 | 1:18.3270 | 1:18.7740 | 1:19.4450 | 1:18.2400 | 1:18.0980 |
| 23rd | 912 | Bamber / Makowiecki / Christensen | Porsche 991 RSR | Porsche North America | 1:18.131 | 1:18.7120 | 1:19.4170 | no time | 1:18.8950 | 1:18.1310 |
| 24th | 911 | Tandy / Pilet / Lietz | Porsche 991 RSR | Porsche North America | 1:18.231 | 1:18.8660 | 1:19.4870 | 1:23.6090 | 1:18.9490 | 1:18.2310 |
| 25th | 25 | Farfus / Auberlen / Werner | BMW M6 GTLM | BMW Team RLL | 1:18.240 | 1:18.7520 | 1:18.9840 | 1:20.4100 | 1:18.5880 | 1:18.2400 |
| 26th | 4 | Milner / Gavin / Fässler | Chevrolet Corvette C7.R | Corvette Racing | 1:18.335 | 1:18.4680 | 1:18.7490 | 1:21.2900 | 1:19.0640 | 1:18.3350 |
| 27th | 44 | Potter / Lally / Seefried | Audi R8 LMS GT3 | Magnus Racing | 1:20.430 | 1:22.9500 | 1:21.3670 | 1:24.4750 | 1:21.1870 | 1:20.4300 |
| 28th | 33 | Bleekemolen / Keating / Miller | Dodge Viper GT3-R | Riley Motorsports | 1:20.561 | 1:21.3050 | 1:21.5170 | 1:25.6210 | 1:21.4960 | 1:20.5610 |
| 29th | 48 | Snow / Sellers / Miller | Lamborghini Huracán GT3 | Paul Miller Racing | 1:20.609 | 1:22.1430 | 1:21.8260 | 1:21.8200 | 1:21.6630 | 1:20.6090 |
| 30th | 63 | Nielsen / Balzan / Segal | Ferrari 488 GT3 | Scuderia Corsa | 1:20.940 | 1:22.1030 | 1:21.1620 | | 1:21.6750 | 1:20.9400 |
| 31st | 9 | Aschenbach / Bell / von Moltke | Audi R8 LMS GT3 | Stevenson Motorsports | 1:20.962 | 1:22.1140 | 1:21.8520 | 1:23.1600 | 1:21.2720 | 1:20.9620 |
| 32nd | 23 | James / Riberas / Farnbacher | Porsche 991 GT3 R | Team Seattle / Alex Job Racing | 1:20.964 | 1:21.8980 | 1:21.5460 | 1:23.2910 | 1:21.3520 | 1:20.9640 |
| 33rd | 96 | Curtis / Freiberg / Klingmann | BMW M6 GT3 | Turner Motorsport | 1:21.067 | 1:22.4210 | 1:21.4250 | 1:22.6930 | 1:21.3670 | 1:21.0670 |
| 34th | 16 | Lewis / Pumpelly / Antinucci | Lamborghini Huracán GT3 | Change Racing | 1:21.147 | 1:22.2310 | 1:21.8030 | 1:22.8310 | 1:22.1610 | 1:21.1470 |
| 35th | 73 | McMurry / Bergmeister / Lindsey | Porsche 991 GT3 R | Park Place Motorsports | 1:21.340 | 1:21.7650 | 1:22.0460 | 1:21.6670 | 1:21.3400 | 1:21.5090 |
| 36th | 97 | Marsal / Palttala / Lawrence | BMW M6 GT3 | Turner Motorsport | 1:21.462 | 1:24.1720 | 1:21.9040 | 1:22.0230 | 1:21.7100 | 1:21.4620 |
| 37th | 27 | Ruberti / Persiani / Sbirrazzuoli | Lamborghini Huracán GT3 | Dream Racing Motorsport | 1:21.468 | 1:22.6800 | 1:22.1570 | 1:21.6460 | 1:21.7280 | 1:21.4680 |
| 38th | 6 | Liddell / Davis / Skeen | Audi R8 LMS GT3 | Stevenson Motorsports | 1:21.475 | 1:22.1390 | 1:22.2880 | 1:22.0080 | 1:21.8690 | 1:21.4750 |