This is the progression of world record improvements of the 1500 metres M50 division of Masters athletics.
Key
HandAutoAthleteNationalityBirthdateAgeLocationDateRef3:57.71Zachariah Ashkanasy10 July 1973Melbourne27 March 20253:58.26David Heath22 May 1965Castres21 June 20154:05.2Tom Roberts27 February 1934Murrumbeena22 March 19844:05.8Ray Hatton5 February 19328 July 19824:13.2Bill Fitzgerald20 May 192513 July 19754.14.6Jack Ryan30 April 1922Sydney23 November 19744:15.0Theo Orr12 March 19246 April 1974
References
Masters Athletics 1500 m list