2010 Pan Pacific Swimming Championships – Women's 400 metre freestyle
The women's 400 metre freestyle competition at the 2010 Pan Pacific Swimming Championships took place on August 20 at the William Woollett Jr. Aquatics Center. The last champion was Ai Shibata of Japan.
This race consisted of eight lengths of the pool, with all eight being in the freestyle stroke.
Records
Prior to this competition, the existing world and Pan Pacific records were as follows:| World record | 3:59.15 | Rome, Italy | July 26, 2009 | |
| Pan Pacific Championships record | 4:04.53 | Tokyo, Japan | August 19, 1989 |
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
The first round was held on August 20, at 10:00.| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 4 | 5 | Chloe Sutton | 4:07.64 | QA | |
| 2 | 4 | 3 | Katie Goldman | 4:08.04 | QA | |
| 3 | 2 | 4 | Allison Schmitt | 4:08.47 | QA | |
| 4 | 3 | 3 | Kate Ziegler | 4:08.63 | QA | |
| 5 | 3 | 4 | Katie Hoff | 4:08.93 | QA | |
| 6 | 2 | 5 | Blair Evans | 4:09.96 | QA | |
| 7 | 3 | 5 | Kylie Palmer | 4:10.27 | QA | |
| 8 | 3 | 6 | Lauren Boyle | 4:10.68 | QA | |
| 9 | 2 | 3 | Alexandra Komarnycky | 4:11.39 | QB | |
| 10 | 2 | 6 | Haley Anderson | 4:11.55 | QB | |
| 11 | 4 | 7 | Yurie Yano | 4:12.72 | QB | |
| 12 | 4 | 8 | Barbara Jardin | 4:13.23 | QB | |
| 13 | 4 | 2 | Samantha Cheverton | 4:13.37 | QB | |
| 14 | 1 | 4 | Christine Jennings | 4:13.97 | QB | |
| 15 | 2 | 7 | Yumi Kida | 4:14.77 | QB | |
| 16 | 4 | 1 | Chika Yonenaga | 4:15.30 | QB | |
| 17 | 4 | 6 | Maiko Fujino | 4:15.45 | ||
| 18 | 4 | 4 | Bronte Barratt | 4:15.96 | ||
| 19 | 3 | 1 | Risa Sekine | 4:16.24 | ||
| 20 | 2 | 2 | Poliana Okimoto | 4:16.32 | ||
| 21 | 1 | 5 | Savannah King | 4:16.73 | ||
| 22 | 3 | 8 | Tanya Hunks | 4:17.28 | ||
| 23 | 1 | 2 | Manuella Lyrio | 4:19.23 | ||
| 24 | 2 | 1 | Alexandra Gabor | 4:21.45 | ||
| 25 | 1 | 6 | Sarah Correa | 4:28.38 | ||
| 26 | 1 | 3 | Carmen Nam | 4:29.16 | ||
| - | 2 | 8 | Tash Hind | DNS | ||
| - | 3 | 2 | Joanna Maranhão | DNS | ||
| - | 3 | 7 | Lindsay Seemann | DNS |
B Final
The B final was held on August 20, at 18:05.| Rank | Lane | Name | Nationality | Time | Notes |
| 9 | 4 | Kate Ziegler | 4:05.52 | ||
| 10 | 5 | Kylie Palmer | 4:11.17 | ||
| 11 | 3 | Samantha Cheverton | 4:12.53 | ||
| 12 | 7 | Savannah King | 4:13.34 | ||
| 13 | 6 | Yumi Kida | 4:14.33 | ||
| 14 | 2 | Chika Yonenaga | 4:18.22 | ||
| 15 | 1 | Manuella Lyrio | 4:18.47 | ||
| 16 | 8 | Carmen Nam | 4:26.38 |
A Final
The A final was held on August 20, at 18:05.| Rank | Lane | Name | Nationality | Time | Notes |
| 4 | Chloe Sutton | 4:05.19 | |||
| 5 | Katie Goldman | 4:05.84 | |||
| 6 | Blair Evans | 4:06.36 | |||
| 4 | 3 | Allison Schmitt | 4:06.76 | ||
| 5 | 2 | Lauren Boyle | 4:09.59 | ||
| 6 | 8 | Barbara Jardin | 4:11.53 | ||
| 7 | 7 | Alexandra Komarnycky | 4:12.67 | ||
| 8 | 1 | Yurie Yano | 4:14.95 |