| 1st | 90 | Matthew McMurry / Edward Cheever / Tristan Vautier | Cadillac DPi-V.R | Spirit of Daytona Racing | 1:47.4320 | 201.6926 |
| 2nd | 2 | Olivier Pla | Nissan Onroak DPi | Tequila Patron ESM | 1:47.5920 | 201.3933 |
| 3rd | 7 | Ricky Taylor / Helio Castroneves / Graham Rahal | Acura ARX-05 | Acura Team Penske | 1:47.7730 | 201.0553 |
| 4th | 22 | Pipo Derani / Nicolas Lapierre / Johannes Van Overbeek | Nissan Onroak DPi | Tequila Patron ESM | 1:47.8340 | 200.9411 |
| 5th | 31 | Felipe Nasr / Mike Conway / Eric Curran | Cadillac DPi-V.R | Whelen Engineering Racing | 1:47.8530 | 200.9057 |
| 6th | 6 | Juan Pablo Montoya / Dane Cameron / Simon Pagenaud | Acura ARX-05 | Acura Team Penske | 1:48.1770 | 200.3038 |
| 7th | 5 | Filipe Albuquerque / João Barbosa / Christian Fittipaldi | Cadillac DPi-V.R | Mustang Sampling Racing | 1:48.2560 | 200.1573 |
| 8th | 10 | Renger van der Zande / Jordan Taylor / Ryan Hunter-Reay | Cadillac DPi-V.R | Konica Minolta Cadillac DPi-V.R | 1:48.3700 | 199.9481 |
| 9th | 99 | Stephen Simpson / Chris Miller / Misha Goikhberg | Oreca 07 Gibson | JDC-Miller Motorsports | 1:48.7420 | 199.2641 |
| 10th | 38 | Patricio O'Ward / Kyle Masson / James French | Oreca 07 Gibson | Performance Tech Motorsports | 1:49.0680 | 198.6671 |
| 11th | 54 | Colin Braun / Romain Dumas / Jon Bennett | Oreca 07 Gibson | CORE autosport | 1:49.1580 | 198.5045 |
| 12th | 85 | Simon Trummer / Nelson Panciatici / Robert Alon | Oreca 07 Gibson | JDC-Miller Motorsports | 1:49.3290 | 198.1939 |
| 13th | 52 | Sebastian Saavedra / Gustavo Yacaman / Roberto Gonzalez | Ligier JS P217 Gibson | AFS/PR1 Mathiasen Motorsports | 1:49.4230 | 198.0233 |
| 14th | 32 | Paul di Resta / Alex Brundle / Phil Hanson | Ligier JS P217 Gibson | United Autosports | 1:49.4880 | 197.9059 |
| 15th | 55 | Jonathan Bomarito / Harry Tincknell / Spencer Pigot | Mazda RT24-P | Mazda Team Joest | 1:48.2790 | 200.1155 |
| 16th | 77 | René Rast / Oliver Jarvis / Tristan Nunez | Mazda RT24-P | Mazda Team Joest | 1:48.1920 | 200.2764 |
| 17th | 25 | Connor De Phillippi / Alexander Sims / Bill Auberlen | BMW M8 GTLM | BMW Team RLL | 1:55.8390 | 187.0557 |
| 18th | 62 | James Calado / Alessandro Pier Guidi / Toni Vilander | Ferrari 488 GTE | Risi Competizione | 1:55.8970 | 186.9623 |
| 19th | 24 | Jesse Krohn / John Edwards / Nicky Catsburg | BMW M8 GTLM | BMW Team RLL | 1:55.9850 | 186.8191 |
| 20th | 67 | Richard Westbrook / Scott Dixon / Ryan Briscoe | Ford GT | Ford Chip Ganassi Racing | 1:56.0980 | 186.6372 |
| 21st | 66 | Joey Hand / Dirk Müller / Sébastien Bourdais | Ford GT | Ford Chip Ganassi Racing | 1:56.1910 | 186.4892 |
| 22nd | 912 | Laurens Vanthoor / Gianmaria Bruni / Earl Bamber | Porsche 991 RSR | Porsche GT Team | 1:56.2510 | 186.3926 |
| 23rd | 3 | Antonio Garcia / Mike Rockenfeller / Jan Magnussen | Chevrolet Corvette C7.R | Corvette Racing | 1:56.5880 | 185.8535 |
| 24th | 911 | Nick Tandy / Frédéric Makowiecki / Patrick Pilet | Porsche 991 RSR | Porsche GT Team | 1:56.6260 | 185.7923 |
| 25th | 4 | Tommy Milner / Marcel Fässler / Oliver Gavin | Chevrolet Corvette C7.R | Corvette Racing | 1:56.9000 | 185.3578 |
| 26th | 51 | Daniel Serra / Pedro Lamy / Mathias Lauda / Paul Dalla Lana | Ferrari 488 GT3 | Spirit of Race | 1:58.7100 | 182.5318 |
| 27th | 29 | Christopher Mies / Sheldon van der Linde / Alessio Picariello | Audi R8 LMS GT3 | Montaplast by Land-Motorsport | 1:59.2290 | 181.7368 |
| 28th | 15 | Jack Hawksworth / Sean Rayhall / David Heinemeier Hansson | Lexus RC F GT3 | 3GT Racing | 1:59.2510 | 181.7030 |
| 29th | 14 | Kyle Marcelli / Dominik Baumann / Philipp Frommenwiler | Lexus RC F GT3 | 3GT Racing | 1:59.4760 | 181.3618 |
| 30th | 48 | Madison Snow / Bryan Sellers / Corey Lewis | Lamborghini Huracán GT3 | Paul Miller Racing | 1:59.4890 | 181.3409 |
| 31st | 63 | Gunnar Jeannette / Alessandro Balzan / Cooper MacNeil | Ferrari 488 GT3 | Scuderia Corsa | 1:59.6090 | 181.1590 |
| 32nd | 75 | Mikael Grenier / Thomas Jäger / Kenny Habul | Mercedes-AMG GT3 | SunEnergy1 Racing | 1:59.9520 | 180.6408 |
| 33rd | 69 | Tom Dyer / Ryan Eversley / Chad Gilsinger | Acura NSX GT3 | HART | 2:00.0690 | 180.4654 |
| 34th | 64 | Frankie Montecalvo | Ferrari 488 GT3 | Scuderia Corsa | 2:00.0800 | 180.4493 |
| 35th | 86 | Katherine Legge / Alvaro Parente / Trent Hindman | Acura NSX GT3 | Michael Shank Racing w/ Curb-Agajanian | 2:00.1980 | 180.2723 |
| 36th | 58 | Christina Nielsen / Mathieu Jaminet / Patrick Long / Robert Renauer | Porsche 991 GT3 R | Wright Motorsports | 2:00.3780 | 180.0019 |
| 37th | 36 | Marc Miller / Kuno Wittmer / Till Bechtolsheimer | Acura NSX GT3 | CJ Wilson Racing | 2:00.6860 | 179.5432 |
| 38th | 71 | Kenton Koch / Loris Spinelli / Juan Perez | Mercedes-AMG GT3 | P1 Motorsports | 2:00.7170 | 179.4966 |
| 39th | 33 | Ben Keating / Jeroen Bleekemolen / Luca Stolz | Mercedes-AMG GT3 | Mercedes-AMG Team Riley Motorsports | 2:00.7430 | 179.4579 |
| 40th | 44 | John Potter / Andy Lally / Andrew Davis | Audi R8 LMS GT3 | Magnus Racing | 2:02.1510 | 177.3899 |
| 41st | 96 | Don Yount / Markus Palttala / Dillon Machavern | BMW M6 GT3 | Turner Motorsport | 2:03.2270 | 175.8401 |
| 42nd | 73 | Tim Pappas / Jörg Bergmeister / Patrick Lindsey | Porsche 991 GT3 R | Park Place Motorsports | 2:04.6500 | 173.8333 |
| 43rd | 93 | Justin Marks / Lawson Aschenbach / Mario Farnbacher | Acura NSX GT3 | Michael Shank Racing w/ Curb-Agajanian | no time | |