This is the progression of world record improvements of the 400 metres W50 division of Masters athletics.
- Key
Incomplete information Pending
| Hand | Auto | Athlete | Nationality | Birthdate | Age | Location | Date |
|---|---|---|---|---|---|---|---|
| 57.55 | Sally Cooke |  United Kingdom
|
9 April 1970 | 52 years, 64 days | Derby | 12 June 2022 | |
| 57.66 | Marie Lande Mathieu |  Puerto Rico
|
26 November 1956 | 50 years, 282 days | Riccione | 4 September 2007 | |
| 58.51 | Marge Allison |  Australia
|
13 September 1944 | 50 years, 312 days | Buffalo | 22 July 1995 | |
| 1:01.11 | Jan Hynes | Australia
|
3 April 1944 | 50 years, 153 days | Brisbane | 3 September 1994 | |
| 1:01.82 | Brunhilde Hoffmann |  Germany
|
17 August 1939 | 52 years, 317 days | Kristiansand | 29 June 1992 | |
| 1:02.8 | Irene Obera |  United States
|
7 December 1933 | 34 years, 320 days | St. George | 22 October 1988 | |
| 1:03.2 | Anne McKenzie |  South Africa
|
28 July 1925 | 50 years, 79 days | Greater Point | 15 October 1975 |