Two Olympic gold medals and three World Championship titles in the 800-metre event define the career of South African middle-distance runner Caster Semenya. Born in 1991 near Polokwane, she emerged as a dominant force in track and field before her status became the subject of intense international scrutiny regarding sex testing and biological eligibility regulations.
Early Career and Athletics Rise
Semenya began her athletic development as part of her training for association football. She attended the University of Pretoria and later studied sports science. Her rapid progression on the track became evident during the 2008 Commonwealth Youth Games, where she secured gold. By 2009, she achieved significant breakthroughs, winning both the 800-metre and 1500-metre races at the African Junior Championships. Her performance at the 2009 World Championships in Berlin, where she claimed gold in the 800-metre final with a time of 1:55.45, solidified her position as a top-tier athlete.
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Take the IQ test →Sex Testing and Regulatory Challenges
Following her 2009 victory, World Athletics requested that Semenya undergo sex verification testing. Reports later identified that she possesses a 5-alpha reductase 2 deficiency, a condition associated with XY chromosomes and natural testosterone levels typical of a male range. In 2019, World Athletics introduced regulations requiring athletes with specific differences of sex development to suppress their testosterone levels to compete in certain female categories. Semenya, who rejects the label of intersex, has challenged these mandates through extensive legal proceedings, maintaining that the policies are discriminatory.
International Achievements and Recognition
Semenya's medal count reflects a long tenure of elite competition. She received gold for the 2012 Olympics and the 2011 World Championships following the disqualification of Mariya Savinova. Additionally, she won gold at the 2016 Olympics and the 2017 World Championships, where she also secured a bronze medal in the 1500-metre race. Her achievements have been marked by numerous accolades, including multiple South African Sportswoman of the Year awards and the 2014 Order of Ikhamanga in Bronze.
Fast facts
- Born: 1991, Polokwane, South Africa
- Education: University of Pretoria
- Primary Sport: Middle-distance running
- Secondary Sport: Football
- Award: Order of Ikhamanga in Bronze (2014)
- Notable Work: The Race to Be Myself
- Citizenship: South Africa
Questions readers ask
What medical condition does Caster Semenya have?
She has 5-alpha reductase 2 deficiency, which is linked to XY chromosomes and natural testosterone levels in the typical male range.
Why has she faced challenges competing in international events?
World Athletics regulations require athletes with certain differences of sex development to suppress testosterone levels to participate in specific female track events, a requirement she has legally contested.
Achievements
- Order of Ikhamanga in Bronze
- Competed at the 2016 Summer Olympics
- Competed at the 2012 Summer Olympics
- 2017 World Championships in Athletics – women's 1500 metres

