Quick Facts
VirgoBiography
Margaret Nyairera Wambui (born 15 September 1995) is a Kenyan middle-distance runner specialising in the 800 metres.
In her first international competition, she won the gold at the 2014 World Junior Championships. She later competed at the 2015 World Championships without advancing from her heat. At the 2016 World Indoor Championships she won the bronze medal. That same year she competed at the 2016 Summer Olympics, setting a new personal best of 1:56.89 in the final, which also earned her a bronze.
In 2019, it was revealed that Wambui was born with the 46,XY karyotype and an intersex condition after her qualification for IAAF women's competition was affected by the association's new regulations for athletes with XY disorders of sex development, testosterone levels above 5 nmol/L, and androgen sensitivity.
Competition record
| Year | Competition | Venue | Position | Event | Notes |
|---|---|---|---|---|---|
Representing  Kenya | |||||
| 2014 | World Junior Championships | Eugene, United States | 1st | 800 m | 2:00.49 |
| 2015 | World Championships | Beijing, China | 39th (h) | 800 m | 2:03.52 |
| 2016 | World Indoor Championships | Portland, United States | 3rd | 800 m | 2:00.44 |
| African Championships | Durban, South Africa | 2nd | 400 m | 52.24 | |
| 3rd | 4 × 400 m relay | 3:30.21 | |||
| Olympic Games | Rio de Janeiro, Brazil | 3rd | 800 m | 1:56.89 | |
| 2017 | World Championships | London, United Kingdom | 4th | 800 m | 1:57.54 |
| 2018 | World Indoor Championships | Birmingham, United Kingdom | – | 800 m | DQ |
| Commonwealth Games | Gold Coast, Australia | 2nd | 800 m | 1:58.07 | |
| African Championships | Asaba, Nigeria | 7th (h) | 800 m | 2:02.80 | |
Did not finish in the final