| 1st | 6 | Juan Pablo Montoya / Dane Cameron / Simon Pagenaud | Acura ARX-05 | Acura Team Penske | 1:08.4120 | 215.0080 |
| 2nd | 7 | Helio Castroneves / Ricky Taylor / Alexander Rossi | Acura ARX-05 | Acura Team Penske | 1:08.5060 | 214.8100 |
| 3rd | 31 | Felipe Nasr / Pipo Derani / Filipe Albuquerque | Cadillac DPi-V.R | Whelen Engineering Racing | 1:08.6120 | 214.4770 |
| 4th | 55 | Jonathan Bomarito / Harry Tincknell / Ryan Hunter-Reay | Mazda RT24-P | Mazda Motorsports | 1:08.6360 | 214.3570 |
| 5th | 10 | Renger van der Zande / Ryan Briscoe / Scott Dixon | Cadillac DPi-V.R | Konica Minolta Cadillac DPi-V.R | 1:08.8500 | 213.6910 |
| 6th | 77 | Oliver Jarvis / Tristan Nunez / Olivier Pla | Mazda RT24-P | Mazda Motorsports | 1:08.9250 | 213.4580 |
| 7th | 5 | Sébastien Bourdais / Tristan Vautier / Loïc Duval | Cadillac DPi-V.R | Mustang Sampling Racing / JDC-Miller MotorSports | 1:09.0400 | 213.1020 |
| 8th | 85 | Chris Miller / Matheus Leist / Gabriel Aubry | Cadillac DPi-V.R | JDC-Miller MotorSports | 1:09.2290 | 212.5220 |
| 9th | 52 | Patrick Kelly / Simon Trummer / Scott Huffaker | Oreca 07 Gibson | PR1 Mathiasen Motorsports | 1:11.5900 | 205.5130 |
| 10th | 51 | Austin McCusker / Jakub Smiechowski / Rob Hodes | Oreca 07 Gibson | Inter Europol Competition | 1:13.1610 | 201.0990 |
| 11th | 38 | James McGuire / Matt Bell / Colin Braun | Oreca 07 Gibson | Performance Tech Motorsports | no time | |
| 12th | 8 | John Farano / Mikkel Jensen / Job van Uitert | Oreca 07 Gibson | Tower Motorsport by Starworks | 1:14.0820 | 198.5990 |
| 13th | 3 | Antonio Garcia / Jordan Taylor / Nicky Catsburg | Chevrolet Corvette C8.R | Corvette Racing | 1:15.1630 | 195.7430 |
| 14th | 25 | Bruno Spengler / Connor De Phillippi / Colton Herta | BMW M8 GTE | BMW Team RLL | 1:15.4340 | 195.0400 |
| 15th | 24 | Augusto Farfus / Jesse Krohn / John Edwards | BMW M8 GTE | BMW Team RLL | 1:15.6150 | 194.5730 |
| 16th | 912 | Earl Bamber / Laurens Vanthoor / Mathieu Jaminet | Porsche 991 RSR 19 | Porsche GT Team | 1:15.6570 | 194.4640 |
| 17th | 4 | Oliver Gavin / Tommy Milner / Marcel Fässler | Chevrolet Corvette C8.R | Corvette Racing | 1:15.8560 | 193.9540 |
| 18th | 911 | Nick Tandy / Frédéric Makowiecki / Matt Campbell | Porsche 991 RSR 19 | Porsche GT Team | 1:15.8580 | 193.9490 |
| 19th | 86 | Matthew McMurry / Mario Farnbacher / Shinya Michimi | Acura NSX GT3 | Meyer Shank Racing w/ Curb-Agajanian | 1:19.2910 | 185.5510 |
| 20th | 63 | Cooper MacNeil / Alessandro Balzan / Jeff Westphal | Ferrari 488 GT3 | Scuderia Corsa | 1:19.4640 | 185.1480 |
| 21st | 12 | Frankie Montecalvo / Townsend Bell / Kyle Kirkwood | Lexus RC F GT3 | AIM Vasser-Sullivan | 1:19.5630 | 184.9180 |
| 22nd | 48 | Bryan Sellers / Madison Snow / Corey Lewis | Lamborghini Huracán GT3 Evo | Paul Miller Racing | 1:19.5670 | 184.9080 |
| 23rd | 96 | Bill Auberlen / Robby Foley / Dillon Machavern | BMW M6 GT3 | Turner Motorsport | 1:19.6570 | 184.6990 |
| 24th | 57 | Alvaro Parente / Misha Goikhberg / Trent Hindman | Acura NSX GT3 | Heinricher Racing w/MSR Curb-Agajanian | 1:19.6660 | 184.6780 |
| 25th | 30 | Robert Ferriol / Markus Winkelhock / Andrew Davis | Audi R8 LMS GT3 | Team Hardpoint | 1:19.7220 | 185.5490 |
| 26th | 9 | Dennis Olsen / Zacharie Robichon / Lars Kern | Porsche 991 GT3 R | Pfaff Motorsports | 1:19.7740 | 184.4280 |
| 27th | 14 | Jack Hawksworth / Aaron Telitz / Michael de Quesada | Lexus RC F GT3 | AIM Vasser-Sullivan | 1:19.9080 | 184.1190 |
| 28th | 16 | Ryan Hardwick / Patrick Long / Jan Heylen | Porsche 991 GT3 R | Wright Motorsports | 1:20.3990 | 182.9950 |
| 29th | 44 | Andy Lally / John Potter / Spencer Pumpelly | Lamborghini Huracán GT3 Evo | GRT Magnus | 1:20.4530 | 182.8730 |
| 30th | 74 | Gar Robinson / Lawson Aschenbach / Ben Keating | Mercedes-AMG GT3 Evo | Riley Motorsports | 1:20.6220 | 182.4880 |
| 31st | 23 | Ian James / Roman de Angelis / Darren Turner | Aston Martin Vantage GT3 | Heart of Racing Team | 1:20.4340 | 182.9140 |