2010 Pan Pacific Swimming Championships – Men's 4 × 100 metre freestyle relay
The men's 4 × 100 metre freestyle relay competition at the 2010 Pan Pacific Swimming Championships took place on August 20 at the William Woollett Jr. Aquatics Center. The last champion was the United States.
This race consisted of eight lengths of the pool. Each of the four swimmers completed two lengths of the pool. The first swimmer had to touch the wall before the second could leave the starting block.
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 | August 11, 2008 |
| Pan Pacific Championships record | Michael Phelps Neil Walker Cullen Jones Jason Lezak | 3:12.46 | Victoria, Canada | August 19, 2006 |
Results
All times are in minutes and seconds.| KEY: | q | Fastest non-qualifiers | Q | Qualified | CR | Championships record | NR | National record | PB | Personal best | SB | Seasonal best |
Heats
Heats weren't performed, as only six teams had entered.Final
The final was held on August 20, at 20:18.| Rank | Lane | Name | Nationality | Time | Notes |
| 4 | Michael Phelps Ryan Lochte Jason Lezak Nathan Adrian | 3:11.74 | CR | ||
| 5 | Eamon Sullivan Kyle Richardson Cameron Prosser James Magnussen | 3:14.30 | |||
| 3 | Lyndon Ferns Gideon Louw Roland Schoeman Graeme Moore | 3:15.93 | |||
| 4 | 2 | Brent Hayden Colin Russell Richard Hortness Luke Peddie | 3:16.53 | ||
| 5 | 6 | Takuro Fujii Sho Uchida Rammaru Harada Shunsuke Kuzuhara | 3:17.49 | ||
| 6 | 7 | Jeong Doo-Hee Park Minkyu Park Seon-Kwan Bae Joonmo | 3:24.53 |