| 1st | 7 | Helio Castroneves / Alexander Rossi / Ricky Taylor | Acura ARX-05 | Acura Team Penske | 1:33.6170 |
| 2nd | 6 | Dane Cameron / Juan Pablo Montoya / Simon Pagenaud | Acura ARX-05 | Acura Team Penske | 1:33.7840 |
| 3rd | 77 | Oliver Jarvis / Tristan Nunez / Olivier Pla | Mazda RT24-P | Mazda Team Joest | 1:34.2320 |
| 4th | 31 | Mike Conway / Pipo Derani / Filipe Albuquerque / Felipe Nasr | Cadillac DPi-V.R | Whelen Engineering Racing | 1:34.3270 |
| 5th | 85 | Juan Piedrahita / Matheus Leist / Chris Miller / Tristan Vautier | Cadillac DPi-V.R | JDC-Miller MotorSports | 1:34.4200 |
| 6th | 10 | Ryan Briscoe / Scott Dixon / Kamui Kobayashi / Renger van der Zande | Cadillac DPi-V.R | Konica Minolta Cadillac DPi-V.R | 1:34.5330 |
| 7th | 5 | João Barbosa / Sébastien Bourdais / Loic Duval / *Tristan Vautier | Cadillac DPi-V.R | Mustang Sampling Racing JDC-Miller MotorSports | 1:34.5500 |
| 8th | 55 | Jonathan Bomarito / Harry Tincknell / Ryan Hunter-Reay | Mazda RT24-P | Mazda Team Joest | 1:34.6250 |
| 9th | 81 | Ben Hanley / Henrik Hedman / Colin Braun / Harrison Newey | Oreca 07 Gibson | DragonSpeed USA | 1:35.1400 |
| 10th | 8 | John Farano / Ryan Dalziel / David Heinemeier Hansson / Nicolas Lapierre | Oreca 07 Gibson | Tower Motorsport by Starworks | 1:35.6620 |
| 11th | 52 | Nicholas Boulle / Gabriel Aubry / Ben Keating / Simon Trummer | Oreca 07 Gibson | PR1 Mathiasen Motorsports | 1:37.1790 |
| 12th | 18 | Dwight Merriman / Kyle Tilley / Ryan Lewis / Nicolas Minassian | Oreca 07 Gibson | Era Motorsport | 1:37.5350 |
| 13th | 38 | Cameron Cassels / Kyle Masson / Robert Masson / Don Yount | Oreca 07 Gibson | Performance Tech Motorsports | 1:38.1380 |
| 14th | 2 | Jonathan Hoggard / Cody Ware / James Davison / Mark Kvamme | Riley Mk.30 Gibson | Rick Ware Racing | 1:42.3140 |
| 15th | 62 | Daniel Serra / James Calado | Ferrari 488 GTE | Risi Competizione | 1:42.8640 |
| 16th | 912 | Earl Bamber / Laurens Vanthoor / Mathieu Jaminet | Porsche 991 RSR 19 | Porsche GT Team | 1:42.9650 |
| 17th | 911 | Nick Tandy / Frédéric Makowiecki / Matt Campbell | Porsche 991 RSR 19 | Porsche GT Team | 1:43.0440 |
| 18th | 25 | Bruno Spengler / Connor De Phillippi / Philipp Eng / Colton Herta | BMW M8 GTE | BMW Team RLL | 1:43.1340 |
| 19th | 4 | Oliver Gavin / Tommy Milner / Marcel Fässler | Chevrolet Corvette C8.R | Corvette Racing | 1:43.3660 |
| 20th | 3 | Nicky Catsburg / Antonio Garcia / Jordan Taylor | Chevrolet Corvette C8.R | Corvette Racing | 1:43.6020 |
| 21st | 24 | Jesse Krohn / John Edwards / Chaz Mostert / Augusto Farfus | BMW M8 GTE | BMW Team RLL | 1:43.6420 |
| 22nd | 48 | Bryan Sellers / Madison Snow / Corey Lewis / Andrea Caldarelli | Lamborghini Huracán GT3 Evo | Paul Miller Racing | 1:45.3220 |
| 23rd | 9 | Dennis Olsen / Zacharie Robichon / Lars Kern / Patrick Pilet | Porsche 991 GT3 R | Pfaff Motorsports | 1:45.8180 |
| 24th | 57 | Alvaro Parente / Misha Goikhberg / Trent Hindman / A. J. Allmendinger | Acura NSX GT3 | Heinricher Racing w/MSR Curb-Agajanian | 1:46.0330 |
| 25th | 47 | Brandon Gdovic / Eric Lux | Lamborghini Huracán GT3 Evo | Precision Performance Motorsports | 1:46.0770 |
| 26th | 44 | Marco Mapelli / Spencer Pumpelly / John Potter / Andy Lally | Lamborghini Huracán GT3 Evo | GRT Magnus | 1:46.2250 |
| 27th | 88 | Mirko Bortolotti / Rolf Ineichen / Daniel Morad | Audi R8 LMS GT3 | WRT Speedstar Audi Sport | 1:46.3020 |
| 28th | 19 | Christina Nielsen / Katherine Legge / Tatiana Calderón / Rahel Frey | Lamborghini Huracán GT3 Evo | GEAR Racing powered by GRT Grasser | 1:46.3630 |
| 29th | 54 | Jeroen Bleekemolen / Trenton Estep / Sven Müller | Porsche 991 GT3 R | BLACK SWAN RACING | 1:46.3710 |
| 30th | 63 | Cooper MacNeil / Toni Vilander / Jeff Westphal / Alessandro Balzan | Ferrari 488 GT3 | Scuderia Corsa | 1:46.3810 |
| 31st | 14 | Parker Chase / Jack Hawksworth / Kyle Busch / Michael de Quesada | Lexus RC-F GT3 | AIM Vasser Sullivan | 1:46.4290 |
| 32nd | 96 | Jens Klingmann / Dillon Machavern / Bill Auberlen / Robby Foley | BMW M6 GT3 | Turner Motorsport | 1:46.4380 |
| 33rd | 12 | Frankie Montecalvo / Townsend Bell / Shane Van Gisbergen / Aaron Telitz | Lexus RC-F GT3 | AIM Vasser Sullivan | 1:46.4430 |
| 34th | 98 | Pedro Lamy / Ross Gunn / Mathias Lauda / *Paul Dalla Lana | Aston Martin Vantage GT3 | Aston Martin Racing | 1:46.5880 |
| 35th | 16 | Ryan Hardwick / Patrick Long / Anthony Imperato / Klaus Bachler | Porsche 991 GT3 R | Wright Motorsports | 1:46.6250 |
| 36th | 11 | Richard Heistand / Steijn Schothorst / Franck Perera / Albert Costa | Lamborghini Huracán GT3 Evo | GRT Grasser Racing Team | 1:46.7130 |
| 37th | 23 | Alex Riberas / Roman de Angelis / Ian James / Nicki Thiim | Aston Martin Vantage GT3 | Heart Of Racing Team | 1:46.7290 |
| 38th | 74 | Gar Robinson / Lawson Aschenbach / Ben Keating / Felipe Fraga | Mercedes-AMG GT3 | Riley Motorsports | 1:46.7910 |
| 39th | 86 | Mario Farnbacher / Matthew McMurry / Shinya Michimi / Jules Gounon | Acura NSX GT3 | Meyer Shank Racing w/Curb-Agajanian | 1:47.0470 |