2018 Pan Pacific Swimming Championships – Men's 4 × 100 metre freestyle relay
The men's 4 × 100 metre freestyle relay competition at the 2018 Pan Pacific Swimming Championships took place on August 11 at the Tokyo Tatsumi International Swimming Center. The defending champion was Australia.
Records
Prior to this competition, the existing world and Pan Pacific records were as follows:| World record | Michael Phelps Garrett Weber-Gale Cullen Jones Jason Lezak | 3:08.24 | Beijing, China | 11 August 2008 |
| Pan Pacific Championships record | Michael Phelps Ryan Lochte Jason Lezak Nathan Adrian | 3:11.74 | Irvine, United States | 20 August 2010 |
Results
All times are in minutes and seconds.| KEY: | CR | Championships record | NR | National record | PB | Personal best | SB | Seasonal best |
Final
The final was held on 11 August from 18:00.| Rank | Lane | Nation | Swimmers | Time | Notes |
| 5 | Gabriel Santos Marcelo Chierighini Marco Ferreira Júnior Pedro Spajari | 3:12.02 | |||
| 3 | Jack Cartwright Alexander Graham James Roberts Kyle Chalmers | 3:12.53 | |||
| 6 | Katsumi Nakamura Shinri Shioura Katsuhiro Matsumoto Juran Mizohata | 3:12.54 | AS | ||
| 4 | 2 | Markus Thormeyer Yuri Kisil Javier Acevedo Ruslan Gaziev | 3:14.50 | ||
| 5 | 7 | Rafael Barreto Armand Chan Timothy Yen Jarod Hatch | 3:37.01 | ||
| 4 | Caeleb Dressel Blake Pieroni Zachary Apple Nathan Adrian |