This is the progression of world record improvements of the 400 metres W70 division of Masters athletics.
Key
HandAutoAthleteNationalityBirthdateAgeLocationDateRef1:10.62Sara Montecinos8 March 1954Gothenburg23 August 20241:11.78Barbara Blurton19 March 1950Cannington10 December 20201:12.51Barbara Blurton19 March 1950Cannington12 November 20201:12.76Barbara Blurton19 March 1950Cannington8 October 20201:13.97Aletta Ungerer15 November 1945Perth5 November 20161:15.81Riet Jonkers-Slegers4 October 1943Porto Alegre26 October 20131:16.63Anne Stobaus6 July 1941Sacramento6 July 20111:16.81Leontine Vitola24 December 1937Ljubljana24 July 20081:17.5Winifred Audrey Reid191570Germiston15 June 19851:24.23Polly Clarke17 July 1910San Juan23 September 1983
References
Masters Athletics 400 m list