Masters W70 400 metres world record progression
This is the progression of world record improvements of the 400 metres W70 division of Masters athletics.
;Key:
| Hand | Auto | Athlete | Nationality | Birthdate | Age | Location | Date | Ref |
| 1:10.62 | Sara Montecinos |  ChileAyd|1954|3|8|2024|8|23 |