| 1st | 7 | Helio Castroneves / Ricky Taylor / Alexander Rossi | Acura ARX-05 | Acura Team Penske | 1:46.8740 | 202.7000 |
| 2nd | 10 | Renger van der Zande / Ryan Briscoe / Scott Dixon | Cadillac DPi-V.R | Konica Minolta Cadillac DPi-V.R | 1:47.1250 | 202.2260 |
| 3rd | 6 | Juan Pablo Montoya / Dane Cameron / Simon Pagenaud | Acura ARX-05 | Acura Team Penske | 1:47.1400 | 202.1980 |
| 4th | 5 | Sébastien Bourdais / Tristan Vautier / Loic Duval | Cadillac DPi-V.R | Mustang Sampling Racing/JDC-Miller MotorSports | 1:47.2090 | 202.0680 |
| 5th | 55 | Jonathan Bomarito / Harry Tincknell / Ryan Hunter-Reay | Mazda RT24-P | Mazda Motorsports | 1:47.2450 | 202.0000 |
| 6th | 31 | Felipe Nasr / Pipo Derani / Gabby Chaves | Cadillac DPi-V.R | Whelen Engineering Racing | 1:47.3270 | 201.8460 |
| 7th | 77 | Oliver Jarvis / Tristan Nunez / Olivier Pla | Mazda RT24-P | Mazda Motorsports | 1:47.4740 | 201.5690 |
| 8th | 85 | Matheus Leist / Stephen Simpson / Scott Andrews | Cadillac DPi-V.R | JDC-Miller MotorSports | 1:47.6960 | 201.1540 |
| 9th | 52 | Patrick Kelly / Simon Trummer / Scott Huffaker | Oreca 07 Gibson | PR1 Mathiasen Motorsports | 1:51.3730 | 194.5120 |
| 10th | 51 | Jakub Smiechowski / Naveen Rao / Matt Bell | Oreca 07 Gibson | Inter Europol Competition | 1:53.1470 | 191.4630 |
| 11th | 38 | Don Yount / Patrick Byrne / Guy Cosmo | Oreca 07 Gibson | Performance Tech Motorsports | 1:54.0450 | 189.9550 |
| 12th | 8 | John Farano / Mikkel Jensen / David Heinemeier Hansson | Oreca 07 Gibson | Tower Motorsport by Starworks | 1:54.1940 | 189.7080 |
| 13th | 3 | Antonio Garcia / Jordan Taylor / Nicky Catsburg | Chevrolet Corvette C8.R | Corvette Racing | 1:55.4560 | 187.6340 |
| 14th | 25 | Bruno Spengler / Connor De Phillippi / Colton Herta | BMW M8 GTE | BMW Team RLL | 1:56.1160 | 186.5670 |
| 15th | 24 | Augusto Farfus / Jesse Krohn / John Edwards | BMW M8 GTE | BMW Team RLL | 1:56.3160 | 186.2470 |
| 16th | 4 | Oliver Gavin / Tommy Milner / Marcel Fässler | Chevrolet Corvette C8.R | Corvette Racing | 1:56.4460 | 186.0390 |
| 17th | 911 | Nick Tandy / Frédéric Makowiecki / Earl Bamber | Porsche 991 RSR 19 | Porsche GT Team | 1:56.8400 | 185.4120 |
| 18th | 912 | Earl Bamber / Laurens Vanthoor / Neel Jani | Porsche 991 RSR 19 | Porsche GT Team | 1:57.7740 | 183.9410 |
| 19th | 16 | Ryan Hardwick / Patrick Long / Jan Heylen | Porsche 991 GT3 R | Wright Motorsports | 2:00.8440 | 179.2680 |
| 20th | 30 | Robert Ferriol / Andrew Davis / Pierre Kaffer | Audi R8 LMS GT3 | Team Hardpoint | 2:01.5460 | 178.2320 |
| 21st | 14 | Jack Hawksworth / Aaron Telitz / Kyle Kirkwood | Lexus RC F GT3 | AIM Vasser-Sullivan | 2:01.6050 | 178.1450 |
| 22nd | 11 | Richard Heistand / Steijn Schothorst / Franck Perera | Lamborghini Huracán GT3 Evo | GRT Grasser Racing | 2:01.6520 | 178.0780 |
| 23rd | 63 | Cooper MacNeil / Alessandro Balzan / Jeff Westphal | Ferrari 488 GT3 | Scuderia Corsa | 2:01.8020 | 177.8570 |
| 24th | 12 | Frankie Montecalvo / Townsend Bell / Michael de Quesada | Lexus RC F GT3 | AIM Vasser-Sullivan | 2:01.8390 | 177.8040 |
| 25th | 96 | Robby Foley / Dillon Machavern / Nick Yelloly | BMW M6 GT3 | Turner Motorsport | 2:02.2100 | 177.2640 |
| 26th | 86 | Matthew McMurry / Mario Farnbacher / Shinya Michimi | Acura NSX GT3 | Meyer Shank Racing w/ Curb-Agajanian | 2:02.2860 | 177.1540 |
| 27th | 48 | Bryan Sellers / Madison Snow / Corey Lewis | Lamborghini Huracán GT3 Evo | Paul Miller Racing | 2:02.4350 | 176.9390 |
| 28th | 74 | Gar Robinson / Lawson Aschenbach / Marc Miller | Mercedes-AMG GT3 Evo | Riley Motorsports | 2:02.6890 | 176.5720 |
| 29th | 23 | Ian James / Roman de Angelis / Darren Turner | Aston Martin Vantage GT3 | Heart of Racing Team | 2:02.7050 | 176.5490 |
| 30th | 57 | Misha Goikhberg / Trent Hindman / Joey Hand | Acura NSX GT3 | Heinricher Racing w/MSR Curb-Agajanian | 2:03.1530 | 175.9070 |
| 31st | 44 | Andy Lally / John Potter / Spencer Pumpelly | Lamborghini Huracán GT3 Evo | GRT Magnus | 2:04.3630 | 174.1950 |