Swimming at the 2008 Summer Olympics – Women's 400 metre freestyle Heats Heats

| Heat | Lane | Name_ | Nationality | Time_ |
|---|---|---|---|---|
| 6 | 4 | Federica Pellegrini | Italy | 4:02.19 |
| 6 | 3 | Rebecca Adlington | Great Britain | 4:02.24 |
| 5 | 4 | Katie Hoff | United States | 4:03.71 |
| 5 | 6 | Joanne Jackson | Great Britain | 4:03.80 |
| 5 | 3 | Bronte Barratt | Australia | 4:04.16 |
| 5 | 5 | Coralie Balmy | France | 4:04.25 |
| 4 | 6 | Camelia Potec | Romania | 4:04.55 |
| 4 | 4 | Laure Manaudou | France | 4:04.93 |
| 4 | 5 | Otylia Jędrzejczak | Poland | 4:05.50 |
| 4 | 3 | Linda Mackenzie | Australia | 4:05.91 |
| 6 | 1 | Stephanie Horner | Canada | 4:07.45 |
| 5 | 2 | Wendy Trott | South Africa | 4:08.38 |
| 5 | 7 | Lotte Friis | Denmark | 4:08.47 |
| 6 | 5 | Kate Ziegler | United States | 4:09.59 |
| 6 | 7 | Flavia Rigamonti | Switzerland | 4:09.59 |