Swimming at the 2013 World Aquatics Championships – Men's 400 metre freestyle

Prior to this competition, the existing world and championship records were:

World record	Paul Biedermann (GER)	3:40.07	Rome, Italy	26 July 2009	[3][4]
Competition record	Paul Biedermann (GER)	3:40.07	Rome, Italy	26 July 2009	[3][4]

The heats were held at 10:16.^[5]

Rank	Heat	Lane	Name	Nationality	Time	Notes
1	5	4	Sun Yang	China	3:44.67	Q
2	5	6	Ryan Cochrane	Canada	3:45.74	Q
3	5	5	Jordan Harrison	Australia	3:46.85	Q
4	3	4	Kosuke Hagino	Japan	3:46.92	Q
5	5	7	Devon Brown	South Africa	3:47.17	Q
6	3	5	Hao Yun	China	3:47.49	Q
7	4	5	Connor Jaeger	United States	3:47.83	Q
8	3	6	James Guy	Great Britain	3:47.86	Q
9	3	3	Robbie Renwick	Great Britain	3:47.99
10	4	6	Matthew Stanley	New Zealand	3:48.25
11	4	7	Ahmed Mathlouthi	Tunisia	3:49.45
12	4	4	David McKeon	Australia	3:49.51
13	5	3	Matt McLean	United States	3:49.74
14	4	2	Gabriele Detti	Italy	3:49.78
15	4	1	Filip Zaborowski	Poland	3:50.22
16	4	3	Gergő Kis	Hungary	3:50.87
17	3	1	Matias Koski	Finland	3:51.04
18	5	2	Velimir Stjepanović	Serbia	3:51.90
19	5	0	David Brandl	Austria	3:51.98
20	3	7	Cristian Quintero	Venezuela	3:52.03
21	2	3	Richárd Nagy	Slovakia	3:53.10
22	3	2	Samuel Pizzetti	Italy	3:53.26
23	5	8	Ward Bauwens	Belgium	3:53.60
24	2	5	Marwan Ismail	Egypt	3:53.80	NR
25	5	1	Serhiy Frolov	Ukraine	3:53.92
26	1	8	Martin Grodzki	Germany	3:54.47
27	2	6	Anton Sveinn McKee	Iceland	3:54.67	NR
28	2	1	Welliam Maksi	Syria	3:56.29
28	2	2	Povilas Strazdas	Lithuania	3:56.29
30	4	9	Jeong Jeong-Soo	South Korea	3:56.68
31	5	9	Arturo Pérez Vertti	Mexico	3:57.28
32	3	8	Damien Joly	France	3:57.32
33	2	4	Nezir Karap	Turkey	3:57.37
34	4	8	Dominik Meichtry	Switzerland	3:57.65
35	3	0	Ihar Boki	Belarus	3:58.27
36	4	0	Martin Naidich	Argentina	3:58.92
37	3	9	Kevin Yeap	Malaysia	3:59.08
38	1	4	Nicholas Schwab	Dominican Republic	3:59.29	NR
39	2	7	Marcelo Acosta Jiménez	El Salvador	4:02.21
40	2	0	Yeziel Morales	Puerto Rico	4:02.28
41	2	9	Matthew Lowe	Bahamas	4:03.01
42	1	5	Ahmed Gebrel	Palestine	4:07.70
43	2	8	Phạm Thành Nguyện	Vietnam	4:13.91
44	1	3	Guillermo Lopéz	Nicaragua	4:20.85
45	1	7	Sovijja Pou	Cambodia	4:22.67
46	1	6	Klavio Meca	Albania	4:27.25
47	1	1	Brandon Schuster	Samoa	4:29.60
48	1	2	Khalid Baba	Bahrain	4:29.94

The final was held at 18:13.^[6]

Rank	Lane	Name	Nationality	Time	Notes
	4	Sun Yang	China	3:41.59
	6	Kosuke Hagino	Japan	3:44.82
	1	Connor Jaeger	United States	3:44.85
4	5	Ryan Cochrane	Canada	3:45.02
5	8	James Guy	Great Britain	3:47.96
6	2	Devon Brown	South Africa	3:48.40
6	3	Jordan Harrison	Australia	3:48.40
8	7	Hao Yun	China	3:48.88

• Barcelona 2013 Swimming Coverage