This is the progression of world record improvements of the 400 metres hurdles M50 division of Masters athletics.
| Hand | Auto | Athlete | Nationality | Birthdate | Location | Date | Ref | |
|---|---|---|---|---|---|---|---|---|
| 54.91 | Ian Weakley | 24 February 1974 | Gothenburg | 17 August 2024 | [1] | |||
| 54.75 | Ian Weakley | 24 February 1974 | Berea | 16 July 2024 | ||||
| 56.35 | Mattias Sunneborn | 27 September 1970 | Sollentuna | 13 June 2021 | ||||
| 56.56 | Howard Moscrop | 16 December 1957 | Birmingham | 5 July 2008 | ||||
| 58.1 | Jack Greenwood | 5 February 1926 | Gresham | 3 July 1976 |
Masters Athletics 400 m hurdles list