The men's 400 metre individual medley event at the 2010 FINA World Swimming Championships (25 m) took place 16 December. The heats and final were held on 16 December.

Records

Prior to the competition, the existing world and championship records were as follows.

	Name	Nation	Time	Location	Date
World record	László Cseh László Cseh László Cseh , is a four-time Olympic medalist Hungarian swimmer.-Personal:Cseh has competed in swimming from an early age, and has won numerous Hungarian swimming events. Cseh is coached by György Turi and Zoltán Nemes...		3:57.27	Istanbul Istanbul Istanbul , historically known as Byzantium and Constantinople , is the largest city of Turkey. Istanbul metropolitan province had 13.26 million people living in it as of December, 2010, which is 18% of Turkey's population and the 3rd largest metropolitan area in Europe after London and...	11 December 2009
Championship record	Ryan Lochte Ryan Lochte Ryan Steven Lochte is an American swimmer and a six-time Olympic medalist . As part of the American team, he holds the world record in the 4×200-meter freestyle relay...		4:02.49	Shanghai Shanghai Shanghai is the largest city by population in China and the largest city proper in the world. It is one of the four province-level municipalities in the People's Republic of China, with a total population of over 23 million as of 2010...	6 April 2006

The following records were established during the competition:

Date	Round	Name	Nation	Time	WR	CR
16 December 2010	Heats	Ryan Lochte Ryan Lochte Ryan Steven Lochte is an American swimmer and a six-time Olympic medalist . As part of the American team, he holds the world record in the 4×200-meter freestyle relay...		4:01.76		CR
16 December 2010	Final	Ryan Lochte Ryan Lochte Ryan Steven Lochte is an American swimmer and a six-time Olympic medalist . As part of the American team, he holds the world record in the 4×200-meter freestyle relay...		3:55.50	WR	CR

Heats

35 swimmers participated in 5 heats, qualified swimmers are listed:

Rank	Heat	Lane	Name	Time	Notes
1	3	4		4:01.76	Q, CR
2	3	5		4:02.27	Q
3	4	5		4:03.02	Q
4	3	6		4:03.81	Q
5	4	4		4:04.11	Q
6	5	4		4:04.44	Q
7	5	5		4:06.78	Q
8	4	2		4:06.96	Q

Final

Rank	Lane	Name	Time	Notes
	4		3:55.50	WR
	5		3:57.40
	3		3:57.56
4	2		4:02.73
5	6		4:03.76
6	7		4:04.93
7	1		4:05.26
8	8		4:06.39

External links

• 2010 FINA World Swimming Championships (25 m): Men's 400 m individual medley entry list, from OmegaTiming.com; retrieved 2010-12-13.