Athletics at the 1904 Summer Olympics – Men's 400 metres hurdles

This was the second time the event was held. Introduced along with the men's 200 metres hurdles in 1900, the men's 400 metres hurdles was the only one of the two new hurdles events in 1900–1904 that would stay on the programme long-term, joining the 110 metres hurdles that had been contested in 1896. The 400 metres version would be held in 1900, 1904, and 1908 before being left off for one Games in 1912; when the Olympics returned after World War I, the men's 400 metres hurdles was back and would continue to be contested at every Games thereafter.[2]

The United States was the only nation competing, making its second appearance.

The competition consisted of a single round, with only four hurdlers competing. The hurdles used were the low (2.5 feet high) hurdles typical of the 200 metres hurdles event rather than the 3-foot hurdles standard for the 400 metres hurdles event.[2]

These were the standing world and Olympic records (in seconds) prior to the 1904 Summer Olympics.

World record	Jerome Buck (USA)	56.4*	New York City, United States	19 September 1896
Olympic record	Walter Tewksbury (USA)	57.6**	Paris, France	15 July 1900

^* unofficial 440 yards (= 402.34 m)

^** This track was 500 metres in circumference.

Harry Hillman's time of 53.0 seconds was ineligible for world record consideration because he knocked over a hurdle and because the hurdles were lower than regulation.

• Wudarski, Pawel (1999). "Wyniki Igrzysk Olimpijskich" (in Polish). Retrieved 13 December 2006.