This is the progression of world record improvements of the 400 metres W65 division of Masters athletics.
Key
HandAutoAthleteNationalityBirthdateAgeLocationDateRef1:06.94 Edel Maguire195966Gainesville30 March 20251:07.23Elizabeth Deak24 February 1958Greensboro21 July 20231:08.08Karla Del Grande27 March 1953Toronto12 July 20191:08.21Diane Palmason15 March 1938Eugene8 August 20031:11.45Carolyn Sue Cappetta193665Brisbane13 July 20011:13.71Anna Mangler14 January 1923Eugene5 August 19891:14.31Paula Schneiderhan16 November 1921Melbourne5 December 19871:16.7 Winifred Audrey Reid191568Germiston19 May 1984
References
Masters Athletics 400 m list