Today at the Internationale Stadionfest (ISTAF) in Berlin, Germany, Caster Semenya of South Africa and Ajee Wilson of the United States both shattered the 600m world record, previously set 20 years ago at 1:22.63 by Ana Fidelia Quirot of Cuba.

Semenya, the newly crowned IAAF world champion for 800m, sprinted to a new record of 1:21.77 while Wilson, the world bronze medalist, ran 1:22.39.





Semenya started so fast that the pacer couldn't even get to her proper position in front. She split about 25.5 for the opening 200m.

Wilson maintained second position for the entire race and finished ahead of Francine Niyonsaba of Burundi, the world silver medalist over 800m. Berlin marks Wilson's first career win over Niyonsaba. Her time broke the American record of 1:23.59, set by Alysia Montaño in 2013.

Updated 600m World All-Time List:

Rnk	Time	Athlete	Country	Date
1	1:21.77	Caster Semenya	RSA	27.08.2017
2	1:22.39	Ajee' Wilson	USA	27.08.2017
3	1:22.63	Ana Fidelia Quirot	CUB	25.07.1997
4	1:22.87	Maria Mutola	MOZ	27.08.2002
5	1:23.18	Francine Niyonsaba	BDI	27.08.2017
6	1:23.35	Pamela Jelimo	KEN	05.07.2012
7	1:23.44i	Olga Kotlyarova	RUS	01.02.2004
8	1:23.50	Doina Melinte	ROU	27.07.1986
9	1:23.59i	Alysia Montaño	USA	16.02.2013
10	1:23.78	Natalya Khrushchelyova	RUS	02.09.2003
10	1:23.78	Anita Weiß	GDR	24.07.1976