Swimming at the 2008 Summer Olympics – Men's 400 metre individual medley
Records
Prior to this competition, the existing world and Olympic records were as follows. The following new world and Olympic records were set during this competition.

Swimming at the 2008 Summer Olympics – Men's 400 metre individual medley

Section Title: Records
Table Section Text: Prior to this competition, the existing world and Olympic records were as follows. The following new world and Olympic records were set during this competition.

Date	Event	Name	Nationality	Time	Record

August 9	Heat 4	Michael Phelps	United States	4:07.82	OR

August 10	Final	Michael Phelps	United States	4:03.84	WR, OR

Sentence(s)

Phelps finished in 4:03.84 for the world record in the U.S. Olympic

final_sentence: Phelps finished in 4:03.84 for the world record in the U.S. Olympic