Swimming at the 2009 World Aquatics Championships – Women's 400 metre freestyle explained

The Women's 400 m Freestyle race at the 2009 World Championships was held on 26 July at the Foro Italico in Rome, Italy.

Records

World record		4:00.41	Pescara, Italy	align=right	27 June 2009
Championship record		4:02.61	Melbourne, Australia	align=right	25 March 2007

The following records were established during the competition:

Date	Round	Name	Nationality	Time	Record
26 July	Heat 6		Italy	4:01.96	CR
26 July	Final		Italy	3:59.15	WR

Rank	Time	Heat	Lane	Notes
1	4:01.96	6	4	CR
2	4:02.80	6	3
3	4:03.48	5	4
4	4:04.12	5	5
5	4:04.25	6	5
6	4:05.25	5	6
7	4:05.40	4	3	NR
8	4:05.70	4	4
9	4:08.31	4	2
10	4:08.77	5	2
11	4:09.30	6	7	NR
12	4:10.16	4	1	SA
13	4:10.88	6	6
14	4:11.35	6	1
15	4:11.45	6	2
16	4:11.52	6	0
17	4:11.58	5	7
18	4:11.79	5	0	NR
19	4:13.51	3	3
20	4:13.58	5	8
21	4:13.59	4	8
22	4:13.70	5	9	NR
23	4:14.07	4	6
24	4:14.38	5	3
25	4:14.70	5	1
26	4:14.74	3	6
27	4:15.62	4	5
28	4:15.95	4	7
29	4:15.96	6	9
30	4:16.35	3	7
31	4:16.64	3	5
32	4:16.79	2	2
33	4:16.80	3	4
34	4:17.22	4	0
35	4:17.59	3	1
36	4:18.14	6	8
37	4:20.94	3	0
38	4:21.32	2	4
39	4:21.58	3	9
40	4:22.99	2	5
41	4:23.26	3	8
42	4:24.48	4	9
43	4:27.89	3	2
44	4:29.80	2	3
45	4:33.57	1	3
46	4:33.72	2	1
47	4:33.75	2	6
48	4:34.09	2	7
49	4:41.02	2	0
50	4:41.73	1	5
51	4:46.09	2	9
52	4:47.11	2	8
53	4:47.98	1	4
54	4:59.02	1	6
55	5:04.36	1	2
56	5:10.01	1	7
57	5:18.16	1	8
—	DNS	1	1

Worlds 2009 results: Women's 400m Free Prelims, from OmegaTiming.com (official timer of the 2009 Worlds); retrieved 2009-07-27.
Worlds 2009 results: Women's 400m Free Finals, from OmegaTiming.com (official timer of the 2009 Worlds); retrieved 2009-07-27.