This is the progression of world record improvements of the 400 metres W85 division of Masters athletics.
Incomplete information Pending
| Hand | Auto | Athlete | Nationality | Birthdate | Age | Location | Date | Ref |
|---|---|---|---|---|---|---|---|---|
| 1:37.34 | Kathleen Stewart | 7 August 1939 | 85 years, 318 days | Jarrow | 21 June 2025 | [1] | ||
| 1:41.63 | Emiko Saito | 13 March 1931 | 86 years, 47 days | Chiba | 29 April 2017 | |||
| 1:49.46 | Nina Naumenko | 15 June 1925 | 86 years, 93 days | Lignano | 16 September 2011 | |||
| 2:07.79 | Patricia Peterson | 14 April 1926 | 85 years, 83 days | Sacramento | 6 July 2011 | |||
| 2:11.31 | Josephine Gregg | 1912 | Tucson | 1997 | [2] | |||
| 2:11.2 h | Matsue Nishiyama | 7 March 1907 | Kyoto | 1992 |