World record progression 400 metres individual medley
The swimming world records over 400 meters individual medley are the best floated in the swimming discipline 400 m Individual Medley times. They are recognized by the International Swimming Federation FINA. World records are kept separate for long paths ( 50 m) and short tracks ( 25 m) and separately for men and women. The following are the world-record development is listed for the respective first recognized world record.
Long course world records men
Long course world records women
Short Course World Records Men
(This list is still incomplete )
Short Course World Records Women
(This list is still incomplete )
(As of August 11, 2013 )