| 1st | 01 | van der Zande / Bourdais / Hunter-Reay | Cadillac DPi-V.R | Cadillac Racing | 1:45.1660 | 206.0363 | 7 |
| 2nd | 31 | Derani / Nunez / Conway | Cadillac DPi-V.R | Whelen Engineering Racing | 1:45.1920 | 205.9864 | 8 |
| 3rd | 10 | Taylor / Albuquerque / Stevens | Acura ARX-05 | Konica Minolta Acura ARX-05 | 1:45.3010 | 205.7723 | 6 |
| 4th | 02 | Bamber / Lynn / Jani | Cadillac DPi-V.R | Cadillac Racing | 1:45.3230 | 205.7305 | 8 |
| 5th | 48 | Rockenfeller / Kobayashi / Lopez | Cadillac DPi-V.R | Ally Cadillac | 1:45.5760 | 205.2364 | 8 |
| 6th | 60 | Jarvis / Blomqvist / Vandoorne | Acura ARX-05 | Meyer Shank Racing W/Curb-Agajanian | 1:46.2490 | 203.9361 | 7 |
| 7th | 52 | Keating / Jensen / Huffaker | Oreca 07 Gibson | PR1 Mathiasen Motorsports | 1:49.9540 | 197.0642 | 8 |
| 8th | 81 | Hedman / Montoya / Montoya | Oreca 07 Gibson | DragonSpeed USA LLC | 1:50.5920 | 195.9280 | 8 |
| 9th | 11 | Thomas / Pierson / Bomarito | Oreca 07 Gibson | PR1 Mathiasen Motorsports | 1:50.7320 | 195.6801 | 8 |
| 10th | 5 | Vautier / Westbrook / Duval | Cadillac DPi-V.R | JDC Miller MotorSports | 1:51.3380 | 194.6148 | 3 |
| 11th | 18 | Merriman / Tilley / Dalziel | Oreca 07 Gibson | Era Motorsport | 1:51.5840 | 194.1867 | 8 |
| 12th | 29 | van Eerd / Van Der Garde / Murry | Oreca 07 Gibson | Racing Team Nederland | 1:51.6790 | 194.0209 | 8 |
| 13th | 8 | Farano / Deletraz / Pinto de Andrade | Oreca 07 Gibson | Tower Motorsport | 1:51.8900 | 193.6556 | 8 |
| 14th | 20 | Andersen / Fjordbach / Scherer | Oreca 07 Gibson | High Class Racing | 1:52.5070 | 192.5934 | 7 |
| 15th | 22 | McGuire / Smith / Tappy | Oreca 07 Gibson | United Autosports | 1:53.2090 | 191.3993 | 8 |
| 16th | 74 | Robinson / Fraga / van Berlo | Ligier JS P320 Nissan | Riley Motorsports | 1:57.0480 | 185.1212 | 9 |
| 17th | 36 | Andretti / *Burdon / *Chaves | Ligier JS P320 Nissan | Andretti Autosport | 1:57.0830 | 185.0665 | 9 |
| 18th | 6 | Udell / Gottsacker / de Wilde | Duqueine D08 Nissan | Muehlner Motorsports America | 1:57.6100 | 184.2361 | 8 |
| 19th | 40 | Hanratty / Archer / Vance | Duqueine D08 Nissan | FastMD Racing | 1:57.7190 | 184.0655 | 8 |
| 20th | 38 | Goldburg / Lindh / Shields | Ligier JS P320 Nissan | Performance Tech Motorsports | 1:58.0870 | 183.4926 | 7 |
| 21st | 54 | Bennett / Braun / Kurtz | Ligier JS P320 Nissan | CORE Autosport | 1:58.7170 | 182.5189 | 9 |
| 22nd | 62 | Serra / Rigon / Cheever | Ferrari 488 GT3 | Risi Competizione | 1:59.4140 | 181.4535 | 7 |
| 23rd | 63 | Mapelli / Caldarelli / Bortolotti | Lamborghini Huracán GT3 Evo | TR3 Racing | 1:59.4310 | 181.4278 | 6 |
| 24th | 16 | Hardwick / Robichon / Heylen | Porsche 991 GT3 R | Wright Motorsports | 1:59.7630 | 180.9241 | 7 |
| 25th | 33 | Barbosa / Jakobsen / Willsey | Ligier JS P320 Nissan | Sean Creech Motorsport | 1:59.7810 | 180.8967 | 9 |
| 26th | 96 | Foley / Auberlen / Dinan | BMW M4 GT3 | Turner Motorsport | 1:59.7880 | 180.8871 | 5 |
| 27th | 57 | Ward / Ellis / Dienst | Mercedes-AMG GT3 Evo | Winward Racing | 1:59.8480 | 180.7969 | 7 |
| 28th | 1 | Sellers / Snow / Johansson | BMW M4 GT3 | Paul Miller Racing | 1:59.8980 | 180.7213 | 7 |
| 29th | 47 | Lacorte / Sernagiotto / Fuoco | Ferrari 488 GT3 | Cetilar Racing | 1:59.9170 | 180.6923 | 7 |
| 30th | 3 | Garcia / Taylor / Catsburg | Chevrolet Corvette C8.R GTD | Corvette Racing | 1:59.9270 | 180.6778 | 6 |
| 31st | 23 | Gunn / Riberas / Martin | Aston Martin Vantage GT3 | Heart of Racing Team | 1:59.9570 | 180.6312 | 7 |
| 32nd | 9 | Campbell / Jaminet / Nasr | Porsche 991 GT3 R | Pfaff Motorsports | 1:59.9820 | 180.5941 | 6 |
| 33rd | 14 | Hawksworth / Barnicoat / Telitz | Lexus RC F GT3 | VasserSullivan | 2:00.0020 | 180.5636 | 7 |
| 34th | 24 | Eng / Wittmann / Yelloly | BMW M4 GT3 | BMW M Team RLL | 2:00.0310 | 180.5201 | 5 |
| 35th | 32 | Skeen / McAleer / Juncadella | Mercedes-AMG GT3 Evo | Gilbert Korthoff Motorsports | 2:00.1760 | 180.3029 | 7 |
| 36th | 21 | Mann / Pérez Companc / Vilander | Ferrari 488 GT3 | AF Corse | 2:00.2030 | 180.2626 | 7 |
| 37th | 30 | Balogh / Grist / Dickerson | Ligier JS P320 Nissan | Jr III Racing | 2:00.2300 | 180.2224 | 9 |
| 38th | 25 | De Phillippi / Edwards / Farfus | BMW M4 GT3 | BMW M Team RLL | 2:00.4600 | 179.8780 | 5 |
| 39th | 13 | Fidani / Wittmer / Kern | Duqueine D08 Nissan | AWA | 2:00.4870 | 179.8378 | 8 |
| 40th | 93 | Harrison / Marcelli / Long | Acura NSX GT3 | Racers Edge Motorsports with WTR | 2:00.6050 | 179.6607 | 6 |
| 41st | 7 | Kvamme / Mantella / Bell | Duqueine D08 Nissan | Forty7 Motorsports | 2:00.6240 | 179.6334 | 7 |
| 42nd | 28 | de Quesada / Morad / Götz | Mercedes-AMG GT3 Evo | Alegra Motorsports | 2:00.9190 | 179.1940 | 7 |
| 43rd | 79 | MacNeil / Andlauer / Picariello | Porsche 991 GT3 R | WeatherTech Racing | 2:00.9510 | 179.1474 | 7 |
| 44th | 59 | Miller / Gallagher / Holton | McLaren 720S GT3 | Crucial Motorsports | 2:01.2870 | 178.6517 | 7 |
| 45th | 66 | Simpson / Bechtolsheimer / Farnbacher | Acura NSX GT3 | Gradient Racing | 2:01.3520 | 178.5551 | 6 |
| 46th | 12 | Montecalvo / Andrews / Heistand | Lexus RC F GT3 | VasserSullivan | 2:01.5360 | 178.2847 | 6 |
| 47th | 97 | MacNeil / Gounon / Engel | Mercedes-AMG GT3 Evo | WeatherTech Racing | 2:01.9470 | 177.6844 | 7 |
| 48th | 39 | Megennis / Lewis / Westphal | Lamborghini Huracán GT3 Evo | CarBahn with Peregrine Racing | 2:01.9730 | 177.6458 | 7 |
| 49th | 27 | de Angelis / James / Gamble | Aston Martin Vantage GT3 | Heart of Racing Team | 2:02.2710 | 177.2129 | 6 |
| 50th | 42 | Yount / Conwright / Llarena | Lamborghini Huracán GT3 Evo | NTE/SSR | 2:05.8340 | 172.1950 | 7 |
| 51st | 44 | Potter / Lally / Pumpelly | Aston Martin Vantage GT3 | Magnus Racing | no time | | 5 |
| 52nd | 70 | Iribe / Millroy / Pepper | McLaren 720S GT3 | Inception Racing | no time | | 0 |
| 53rd | 99T | Ferriol / Legge / Wilson | Porsche 991 GT3 R | Team Hardpoint | no time | | 0 |