| 1st | 0 | Meyrick / Legge / Rayhall / Wirth | DeltaWing DWC13 Elan | Panoz DeltaWing Racing | 1:38.590 | no time | 1:39.8740 | 2:22.5940 | 1:38.5900 |
| 2nd | 60 | Negri / Pew / Allmendinger / Pla | Ligier JS P2 Honda HPD | Michael Shank Racing w/Curb-Agajanian | 1:38.881 | 2:07.4320 | 1:39.3560 | 1:54.8070 | 1:38.8810 |
| 3rd | 2 | Derani / Sharp / Brown / Van Overbeek | Ligier JS P2 Honda HPD | Tequila Patrón ESM | 1:39.192 | 2:06.3040 | 1:39.1920 | 1:59.5810 | 1:39.7450 |
| 4th | 02 | Dixon / Kanaan / McMurray / Larson | Riley Mk XXVI Ford | Ford Chip Ganassi Racing | 1:39.928 | 2:10.0940 | 1:39.9280 | 1:56.8440 | 1:40.8130 |
| 5th | 01 | Wurz / Stroll / Hartley / Priaulx | Riley DP Ford EcoBoost | Ford Chip Ganassi Racing | 1:40.116 | 2:08.6390 | 1:40.1160 | 1:57.7150 | 1:40.7670 |
| 6th | 31 | Curran / Cameron / Pagenaud / Adam | Chevrolet Corvette DP | Action Express Racing | 1:40.372 | 2:10.0160 | 1:40.3720 | 2:00.4590 | 1:41.5430 |
| 7th | 55 | Nunez / Bomarito / Pigot | Mazda Prototype | Mazda Motorsports | 1:40.376 | 2:16.4290 | 1:40.4450 | 1:56.6910 | 1:40.3760 |
| 8th | 10 | Taylor / Taylor / Angelelli / Barrichello | Chevrolet Corvette DP | No. 10 Konica Minolta Corvette DP for Wayne Taylor Racing | 1:40.404 | 2:07.9660 | 1:40.4040 | 1:58.8970 | 1:40.5570 |
| 9th | 5 | Barbosa / Fittipaldi / Albuquerque / Pruett | Chevrolet Corvette DP | Action Express Racing | 1:40.601 | 2:15.7070 | 1:40.6260 | 2:04.8470 | 1:40.6010 |
| 10th | 90 | Dalziel / Goossens / Hunter-Reay | Chevrolet Corvette DP | VisitFlorida Racing | 1:40.829 | 2:10.6100 | 1:40.8290 | 1:56.7260 | 1:42.0740 |
| 11th | 37 | Aleshin / Minassian / Mediani / Ladygin | BR 01 Nissan | SMP Racing | 1:40.979 | 2:05.7930 | 1:40.9790 | 1:56.3330 | no time |
| 12th | 70 | Long / Miller / Devlin | Mazda Prototype | Mazda Motorsports | 1:41.433 | 2:13.3800 | 1:42.3330 | 1:58.4260 | 1:41.4330 |
| 13th | 52 | Kimber-Smith / Alon / Gutierrez / Boulle | Oreca FLM 09 Chevrolet | PR1/Mathiasen Motorsports | 1:42.850 | no time | 1:42.8500 | 2:10.2980 | 1:43.2830 |
| 14th | 85 | Simpson / Miller / Goikhberg / Koch | Oreca FLM 09 Chevrolet | JDC-Miller Motorsports | 1:42.893 | 2:07.4130 | 1:42.8930 | 2:05.6340 | 1:43.7310 |
| 15th | 8 | van der Zande / Popow / Cumming | Oreca FLM 09 Chevrolet | Starworks Motorsport | 1:43.124 | 2:19.7600 | 1:43.1240 | 2:55.6230 | 1:44.6760 |
| 16th | 54 | Bennett / Braun / Wilkins / Plowman | Oreca FLM 09 Chevrolet | Core Autosport | 1:43.690 | no time | 1:43.6900 | 2:07.3020 | 1:44.3100 |
| 17th | 50 | Schroeder / Defoor / Hinton / Grüber / Pace | Riley DP BMW Power | Highway to Help | 1:43.806 | 2:13.1160 | 1:43.8060 | 2:14.1930 | 1:46.7090 |
| 18th | 38 | French / Norman / Norman / Gdovic | Oreca FLM 09 Chevrolet | Performance Tech Motorsports | 1:43.928 | 2:11.1100 | 1:43.9280 | 2:04.3910 | 1:45.2140 |
| 19th | 3 | Magnussen / Garcia / Rockenfeller | Chevrolet Corvette C7.R | Corvette Racing | 1:44.012 | 2:05.9790 | 1:44.0120 | 1:56.2010 | 1:45.7160 |
| 20th | 20 | Mowlem / Drissi / Drumwright / Vera / Gaughan | Oreca FLM 09 Chevrolet | BAR1 Motorsports | 1:44.263 | 2:05.7080 | 1:44.2630 | 2:00.2900 | 1:45.3890 |
| 21st | 67 | Briscoe / Westbrook / Mücke | Ford GT | Ford Chip Ganassi Racing | 1:44.391 | 2:08.4400 | 1:44.3910 | 1:58.7430 | 1:45.8050 |
| 22nd | 88 | Johnston / Kvamme / Rosenqvist | Oreca FLM 09 Chevrolet | Starworks Motorsport | 1:44.469 | 2:28.2500 | 1:44.4690 | 2:28.9450 | 1:44.7590 |
| 23rd | 4 | Gavin / Fässler / Milner | Chevrolet Corvette C7.R | Corvette Racing | 1:44.563 | 2:03.9740 | 1:44.5630 | 1:55.6260 | 1:45.7040 |
| 24th | 26 | Eversley / Merzon / Yount / Lewis / Falb | Oreca FLM 09 Chevrolet | BAR1 Motorsports | 1:44.563 | 2:07.4850 | 1:44.5630 | 2:00.2210 | 1:47.5960 |
| 25th | 68 | Pier Guidi / Prémat / Serra / Rojas | Ferrari 488 GTE | Scuderia Corsa | 1:44.589 | 2:03.3090 | 1:44.5890 | 1:58.3600 | 1:45.2320 |
| 26th | 912 | Makowiecki / Bamber / Christensen | Porsche 991 RSR | Porsche North America | 1:44.599 | 2:02.3640 | 1:44.5990 | 1:55.2670 | 1:45.5010 |
| 27th | 100 | Edwards / Luhr / Wittmer / Rahal | BMW M6 GTLM | BMW Team RLL | 1:44.606 | 2:02.4970 | 1:44.6060 | 1:57.8590 | 1:45.1990 |
| 28th | 72 | Bruni / Bertolini / Shaytar / Calado | Ferrari 488 GTE | SMP Racing | 1:44.639 | no time | 1:44.6390 | 1:55.4280 | 1:45.5890 |
| 29th | 911 | Tandy / Pilet / Estre | Porsche 991 RSR | Porsche North America | 1:44.662 | 2:01.4080 | 1:44.6620 | 1:56.1590 | 1:45.7840 |
| 30th | 25 | Farfus / Werner / Auberlen / Spengler | BMW M6 GTLM | BMW Team RLL | 1:44.844 | 2:03.9740 | 1:44.8440 | 1:55.5360 | 1:44.9660 |
| 31st | 66 | Hand / Bourdais / Müller | Ford GT | Ford Chip Ganassi Racing | 1:44.979 | 2:06.7580 | 1:44.9790 | 1:56.0240 | 1:45.9720 |
| 32nd | 62 | Vilander / Fisichella / Rigon / Beretta | Ferrari 488 GTE | Risi Competizione | 1:45.063 | 2:03.3860 | 1:45.0630 | 1:55.0780 | 1:45.6680 |
| 33rd | 11 | Bell / Sweedler / Piscopo / Antinucci | Lamborghini Huracán GT3 | O'Gara Motorsport | 1:45.873 | 2:08.9060 | 1:45.8730 | 2:04.0500 | 1:48.1210 |
| 34th | 16 | Grala / Pumpelly / Lewis / Marks | Lamborghini Huracán GT3 | Change Racing | 1:46.226 | no time | 1:46.2260 | no time | 1:52.8910 |
| 35th | 28 | Basseng / Ineichen / Konrad / Willsey / Babini | Lamborghini Huracán GT3 | Konrad Motorsport | 1:46.424 | 2:06.3570 | 1:46.4240 | 2:02.2910 | 1:49.5190 |
| 36th | 48 | Miller / Bortolotti / Sellers / Snow | Lamborghini Huracán GT3 | Paul Miller Racing | 1:46.520 | 2:13.3980 | 1:46.5200 | | 1:47.9120 |
| 37th | 30 | Müller / Stippler / Abbelen / Huisman / Schmitz | Porsche 991 GT3 R | Frikadelli Racing | 1:47.036 | 2:07.7510 | 1:47.0360 | 2:07.8690 | 1:48.7280 |
| 38th | 23 | James / Riberas / Farnbacher / Henzler | Porsche 991 GT3 R | Team Seattle / Alex Job Racing | 1:47.167 | 2:07.9850 | 1:47.1670 | 2:03.1960 | 1:48.2190 |
| 39th | 22 | Keen / MacNeil / MacNeil / Van Gisbergen / Jeannette | Porsche 991 GT3 R | Alex Job Racing | 1:47.168 | 2:06.5560 | 1:47.1680 | 2:06.6590 | 1:49.6820 |
| 40th | 44 | Lally / Potter / Seefried / Rast | Audi R8 LMS GT3 | Magnus Racing | 1:47.216 | 2:09.1170 | 1:47.2160 | 2:03.4260 | 1:48.2390 |
| 41st | 98 | Stanaway / Dalla Lana / Lamy / Lauda | Aston Martin Vantage GT3 | Aston Martin Racing | 1:47.387 | 2:07.9820 | 1:47.3870 | 2:04.5780 | 1:48.2490 |
| 42nd | 45 | Krohn / Kaffer / Jönsson / Haase | Audi R8 | Flying Lizard Motorsports | 1:47.404 | 2:16.3840 | 1:47.4040 | 2:05.4070 | 1:48.6110 |
| 43rd | 540 | Pappas / Pilgrim / Catsburg / Long | Porsche 991 GT3 R | Black Swan Racing | 1:47.416 | 2:20.5130 | 1:47.4160 | 2:05.7470 | 1:48.9790 |
| 44th | 73 | McMurry / Lindsey / Siedler / Bergmeister | Porsche 991 GT3 R | Park Place Motorsports | 1:47.455 | 2:05.7980 | 1:47.4550 | 2:02.2490 | 1:47.5940 |
| 45th | 6 | Davis / Liddell / Aschenbach / Bell | Audi R8 LMS GT3 | Stevenson Motorsports | 1:47.647 | 2:11.4450 | 1:47.6470 | 2:06.0630 | 1:48.3690 |
| 46th | 63 | Segal / Nielsen / Balzan / Renauer | Ferrari 458 GT3 | Scuderia Corsa | 1:47.737 | 2:09.3980 | 1:47.7370 | 2:06.0410 | 1:48.7080 |
| 47th | 51 | Giammaria / Mann / Cressoni / Cioci | Ferrari 458 | Spirit of Race | 1:47.748 | 2:11.2980 | 1:47.7480 | 2:03.0780 | 1:48.3630 |
| 48th | 93 | Faulkner / Keating / Robinson / Mosing / Foss | Dodge Viper GT3-R | Riley Motorsports | 1:47.820 | 2:07.3920 | 1:47.8200 | 2:06.3970 | 1:50.8280 |
| 49th | 33 | Bleekemolen / Keating / Farnbacher / Miller | Dodge Viper GT3-R | Riley Motorsports | 1:47.929 | 2:07.7590 | 1:47.9290 | 2:02.2810 | |
| 50th | 007 | Davison / Creel / Pérez / Pérez de Lara / Viljoen | Aston Martin V12 Vantage GT3 | TRG-AMR | 1:48.012 | 2:09.4660 | 1:48.0120 | 2:05.2810 | 1:48.5340 |
| 51st | 96 | Curtis / Freiberg / Klingmann / Wittmann | BMW M6 GT3 | Turner Motorsport | 1:48.122 | 2:13.1230 | 1:48.1220 | 2:05.7200 | 1:48.1810 |
| 52nd | 97 | Krohn / Palttala / Marsal / Martin | BMW M6 GT3 | Turner Motorsport | 1:48.140 | 2:10.3070 | 1:48.1400 | 2:01.9480 | 1:48.3750 |
| 53rd | 9 | von Moltke / Habul / Said / Vautier | Audi R8 LMS GT3 | Stevenson Motorsports | 1:48.297 | no time | 1:48.2970 | 2:11.0030 | 1:49.3200 |
| 54th | 21 | Busnelli / Michaelian / Toussaint / Willsey | Lamborghini Huracán GT3 | Konrad Motorsport | 1:48.577 | 2:18.7160 | 1:48.5770 | 2:22.4420 | 1:54.4500 |