Masters M45 400 metres hurdles world record progression
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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 | Age | Location | Date | Ref |
|---|---|---|---|---|---|---|---|---|
| 53.57 | Aramis Diaz |  Italy |
22 November 1974 | 45 years, 288 days | Rome | 5 September 2020 | ||
| 53.90 | Aramis Diaz | Italy |
22 November 1974 | 45 years, 281 days | Padua | 29 August 2020 | ||
| 54.92 | Edward Betts |  Great Britain |
18 February 1971 | 45 years, 142 days | Palencia | 9 July 2016 | ||
| 55.18 | Guido Müller |  Germany |
22 December 1938 | 47 years, 222 days | Malmö | 1 August 1986 | ||
| 55.7 h | Jack Greenwood |  United States |
5 February 1926 | 46 years, 201 days | San Diego | 24 August 1972 |