Masters W50 100 metres world record progression

This is the progression of world record improvements of the 100 metres W50 division of Masters athletics.
;Key:

Hand	Auto	Wind	Athlete	Nationality	Birthdate	Location	Date
	11.67	0.9	Merlene Ottey		10.05.1960	Novo Mesto	13.07.2010
	12.50	1.6	Phil Raschker		21.02.1947	Knoxville	17.05.1997
	13.06	2.1	Marge Allison		13.09.1944	Buffalo	13.07.1995
	13.13		Irene Obera		07.12.1933	Eugene	17.08.1984
	13.16		Irene Obera		07.12.1933	Los Angeles	14.07.1984
	13.17		Daphne Pirie		12.12.1931	Houston	16.09.1983
	13.50		Shirley Peterson		24.07.1928	Christchurch	10.03.1982