Masters W45 400 metres world record progression
This is the progression of world record improvements of the 400 metres W45 division of Masters athletics.
- Key
Incomplete information Pending
| Hand | Auto | Athlete | Nationality | Birthdate | Location | Date |
|---|---|---|---|---|---|---|
| 56.14 | Angee Henry-Nott |  United States
|
21 December 1975 | Ames: Video on YouTube | 23 July 2021 | |
| 56.15 | Marie Lande Mathieu |  Puerto Rico
|
26 November 1956 | Carolina | 12 July 2003 | |
| 56.82 | Mary Libal | United States
|
28 June 1950 | Buffalo | 22 July 1995 | |
| 57.8 | Jan Hynes |  Australia
|
3 April 1944 | Brisbane | 1 March 1989 | |
| 59.68 | Colleen Mills |  New Zealand
|
23 November 1933 | Christchurch | 10 January 1981 |