Swimming_at_the_2003_World_Aquatics_Championships_–_Men's_400_metre_individual_medley
Swimming at the 2003 World Aquatics Championships – Men's 400 metre individual medley
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The Men's 400 Individual Medley event at the 10th FINA World Aquatics Championships swam on July 27, 2003 in Barcelona, Spain. Preliminary heats[1] swam during the morning session, with the top-8 finisher advancing to swim again in the Final[2] that evening.
At the start of the event, the existing World (WR) and Championship (CR) records were both:
- WR: 4:10.73 swum by Michael Phelps (USA) on April 6, 2003 in Indianapolis, USA
- CR: 4:12.30 swum by Tom Dolan (USA) on September 6, 1994 in Rome, Italy