| 1st | 2 | Sharp / Brown / Van Overbeek / Derani | Ligier JS P2 Honda HPD | Tequila Patrón ESM | 1:39.249 | 1:39.2490 |
| 2nd | 60 | Pew / Negri / Allmendinger / Pla | Ligier JS P2 Honda HPD | Michael Shank Racing W/Curb-Agajanian | 1:39.438 | 1:39.4380 |
| 3rd | 70 | Miller / Long / Devlin | Mazda Prototype | Mazda Motorsports | 1:39.828 | 1:39.8280 |
| 4th | 37 | Minassian / Mediani / Aleshin / Ladygin | BR 01 Nissan | SMP Racing | 1:39.899 | 1:39.8990 |
| 5th | 55 | Bomarito / Nunez / Pigot | Mazda Prototype | Mazda Motorsports | 1:39.934 | 1:39.9340 |
| 6th | 0 | Meyrick / Legge / Rayhall / Wirth | DeltaWing DWC13 Elan | Panoz DeltaWing Racing | 1:39.955 | 1:39.9550 |
| 7th | 10 | Taylor / Taylor / Angelelli | Chevrolet Corvette DP | No. 10 Konica Minolta Corvette DP for Wayne Taylor Racing | 1:39.973 | 1:39.9730 |
| 8th | 5 | Fittipaldi / Barbosa / Albuquerque / Pruett | Chevrolet Corvette DP | Action Express Racing | 1:39.995 | 1:39.9950 |
| 9th | 31 | Curran / Cameron / Pagenaud / Adam | Chevrolet Corvette DP | Action Express Racing | 1:40.011 | 1:40.0110 |
| 10th | 02 | Dixon / Kanaan / McMurray / Larson | Riley Mk XXVI Ford | Ford Chip Ganassi Racing | 1:40.244 | 1:40.2440 |
| 11th | 90 | Dalziel / Goossens / Hunter-Reay | Chevrolet Corvette DP | VisitFlorida Racing | 1:40.418 | 1:40.4180 |
| 12th | 01 | Stroll / Wurz / Hartley / Priaulx | Riley DP Ford | Ford Chip Ganassi Racing | 1:40.665 | 1:40.6650 |
| 13th | 8 | van der Zande / Popow / Cumming / Hawksworth | Oreca FLM 09 Chevrolet | Starworks Motorsport | 1:42.118 | 1:42.1180 |
| 14th | 54 | Bennett / Braun / Wilkins / Plowman | Oreca FLM 09 Chevrolet | Core Autosport | 1:42.423 | 1:42.4230 |
| 15th | 88 | Kvamme / Johnston / Engel / Rosenqvist | Oreca FLM 09 Chevrolet | Starworks Motorsport | 1:42.458 | 1:42.4580 |
| 16th | 20 | Drumwright / Mowlem / Alder / Auer | Oreca FLM 09 Chevrolet | BAR1 Motorsports | 1:42.658 | 1:42.6580 |
| 17th | 52 | Alon / Kimber-Smith / Gutierrez / Boulle | Oreca FLM 09 Chevrolet | PR1/Mathiasen Motorsports | 1:42.986 | 1:42.9860 |
| 18th | 50 | Defoor / Schroeder / Hinton / Grüber / Pace | Riley DP BMW | Highway to Help | 1:43.330 | 1:43.3300 |
| 19th | 85 | Miller / Goikhberg / Koch / Simpson | Oreca FLM 09 Chevrolet | JDC-Miller Motorsports | 1:43.491 | 1:43.4910 |
| 20th | 26 | Merzon / Eversley / Yount / Yacaman | Oreca FLM 09 Chevrolet | BAR1 Motorsports | 1:44.078 | 1:44.0780 |
| 21st | 38 | French / Norman / Norman / Gdovic | Oreca FLM 09 Chevrolet | Performance Tech Motorsports | 1:44.848 | 1:44.8480 |
| 22nd | 100 | Luhr / Edwards / Wittmer / Rahal | BMW M6 GTLM | BMW Team RLL | 1:45.088 | 1:45.0880 |
| 23rd | 4 | Gavin / Fässler / Milner | Chevrolet Corvette C7.R | Corvette Racing | 1:45.106 | 1:45.1060 |
| 24th | 25 | Farfus / Auberlen / Werner / Spengler | BMW M6 GTLM | BMW Team RLL | 1:45.120 | 1:45.1200 |
| 25th | 3 | Garcia / Magnussen / Rockenfeller | Chevrolet Corvette C7.R | Corvette Racing | 1:45.124 | 1:45.1240 |
| 26th | 66 | Hand / Bourdais / Müller | Ford GT | Ford Chip Ganassi Racing | 1:45.248 | 1:45.2480 |
| 27th | 68 | Pier Guidi / Prémat / Serra / Rojas | Ferrari 488 GTE | Scuderia Corsa | 1:45.266 | 1:45.2660 |
| 28th | 67 | Briscoe / Westbrook / Mücke | Ford GT | Ford Chip Ganassi Racing | 1:45.269 | 1:45.2690 |
| 29th | 72 | Bertolini / Shaytar / Bruni / Calado | Ferrari 488 GTE | SMP Racing | 1:45.314 | 1:45.3140 |
| 30th | 911 | Pilet / Tandy / Estre | Porsche 991 RSR | Porsche North America | 1:45.524 | 1:45.5240 |
| 31st | 912 | Bamber / Makowiecki / Christensen | Porsche 991 RSR | Porsche North America | 1:45.543 | 1:45.5430 |
| 32nd | 22 | MacNeil / MacNeil / Keen / Van Gisbergen / Jeannette | Porsche 991 GT3 R | Alex Job Racing | 1:47.852 | 1:47.8520 |
| 33rd | 48 | Bortolotti / Miller / Sellers / Snow | Lamborghini Huracán GT3 | Paul Miller Racing | 1:47.881 | 1:47.8810 |
| 34th | 6 | Davis / Liddell / Aschenbach / Bell | Audi R8 LMS GT3 | Stevenson Motorsports | 1:47.949 | 1:47.9490 |
| 35th | 93 | Keating / Robinson / Mosing / Foss / Faulkner | Dodge Viper GT3-R | Riley Motorsports | 1:47.960 | 1:47.9600 |
| 36th | 30 | Stippler / Abbelen / Huisman / De Phillippi / Müller | Porsche 991 GT3 R | Frikadelli Racing | 1:47.963 | 1:47.9630 |
| 37th | 33 | Keating / Bleekemolen / Farnbacher / Miller | Dodge Viper GT3-R | Riley Motorsports | 1:48.000 | 1:48.0000 |
| 38th | 44 | Potter / Lally / Seefried / Rast | Audi R8 LMS GT3 | Magnus Racing | 1:48.070 | 1:48.0700 |
| 39th | 23 | James / Riberas / Farnbacher / Henzler | Porsche 991 GT3 R | Team Seattle / Alex Job Racing | 1:48.119 | 1:48.1190 |
| 40th | 73 | McMurry / Lindsey / Bergmeister | Porsche 991 GT3 R | Park Place Motorsports | 1:48.186 | 1:48.1860 |
| 41st | 96 | Curtis / Freiberg / Klingmann / Wittmann | BMW M6 GT3 | Turner Motorsport | 1:48.207 | 1:48.2070 |
| 42nd | 11 | Bell / Sweedler / Piscopo / Antinucci | Lamborghini Huracán GT3 | O'Gara Motorsport | 1:48.253 | 1:48.2530 |
| 43rd | 63 | Nielsen / Balzan / Segal / Renauer | Ferrari 458 GT3 | Scuderia Corsa | 1:48.266 | 1:48.2660 |
| 44th | 540 | Pappas / Pilgrim / Catsburg / Long | Porsche 991 GT3 R | Black Swan Racing | 1:48.281 | 1:48.2810 |
| 45th | 97 | Marsal / Krohn / Palttala / Martin | BMW M6 GT3 | Turner Motorsport | 1:48.307 | 1:48.3070 |
| 46th | 28 | Ineichen / Willsey / Konrad / Babini / Basseng | Lamborghini Huracán GT3 | Konrad Motorsport | 1:48.309 | 1:48.3090 |
| 47th | 9 | Said / Habul / von Moltke / Vautier | Audi R8 LMS GT3 | Stevenson Motorsports | 1:48.321 | 1:48.3210 |
| 48th | 51 | Mann / Giammaria / Cressoni / Cioci | Ferrari 458 | Spirit of Race | 1:48.335 | 1:48.3350 |
| 49th | 16 | Pumpelly / Lewis / Marks / Grala / Cindric | Lamborghini Huracán GT3 | Change Racing | 1:48.559 | 1:48.5590 |
| 50th | 45 | Kaffer / Jönsson / Haase / Krohn | Audi R8 | Flying Lizard Motorsports | 1:48.871 | 1:48.8710 |
| 51st | 98 | Dalla Lana / Lamy / Lauda / Stanaway | Aston Martin Vantage GT3 | Aston Martin Racing | 1:48.911 | 1:48.9110 |
| 52nd | 007 | Creel / Pérez / Pérez de Lara / Pérez / Viljoen | Aston Martin V12 Vantage GT3 | TRG-AMR | 1:49.175 | 1:49.1750 |
| 53rd | 21 | Busnelli / Michaelian / Grala | Lamborghini Huracán GT3 | Konrad Motorsport | 1:51.157 | 1:51.1570 |