Masters M45 400 metres hurdles world record progression

This is the progression of world record improvements of the 400 metres hurdles M45 division of Masters athletics.

Key

  Incomplete information   Pending

Hand	Auto	Athlete	Nationality	Birthdate	Location	Date
	53.57	Aramis Diaz	Italy	22 November 1974	Rome	5 September 2020
	53.90	Aramis Diaz	Italy	22 November 1974	Padova	29 August 2020
	54.92	Edward Betts	United Kingdom	18 February 1971	Palencia	9 July 2016
	55.18	Guido Müller	Germany	22 December 1938	Malmö	1 August 1986
55.7		Jack Greenwood	United States	5 February 1926	San Diego	24 August 1972