This is the progression of world record improvements of the 4 × 400 metres relay W55 division of Masters athletics.
| Time | Athletes | Nationality | Birthdates | Location | Date | |
|---|---|---|---|---|---|---|
| 4:23.52 | Sue McDonald Lisa Valle Michelle Rohl Roxanne Brockner | 29 March 1963 29 April 1966 12 November 1965 27 December 1965 | Ames | 25 July 2021 | ||
| 4:27.33 | Julie Rogers Christine Anthony Janice Ellacott Virginia Mitchell | 15 January 1964 26 January 1963 5 November 1960 29 January 1963 | Caorle | 15 September 2019 |