Ewa Kłobukowska

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Ewa Kłobukowska
Ewa Kłobukowska running the 4x100 relay in 1964
Personal information
Nationality Polish
Born (1946-10-01) 1 October 1946 (age 68)
Warsaw, Poland
Olympic medal record
Competitor for  Poland
Women’s Athletics
Olympic Games
Gold 1964 Tokyo 4x100 m relay
Bronze 1964 Tokyo 100 m
European Championships
Gold 1966 Budapest 4x100 m relay
Gold 1966 Budapest 100 m
Silver 1966 Budapest 200 m

Ewa Kłobukowska (born 1 October 1946 in Warsaw, Poland) is a former Polish sprinter.


She won the gold medal in the women's 4x100 m relay and the bronze medal in the women's 100 m sprint at the 1964 Summer Olympics in Tokyo.

In 1965 in Prague she set a world record in the 100 m sprint with the time 11.1 s.

In 1966 at the European Athletics Championships in Budapest she won two gold medals in the 100 m sprint and the 4x100 m relay and the silver medal in the 200 m sprint.

Kłobukowska failed a traditional gender test for European Cup women's track and field competition in Kiev in 1967 and was subsequently banned from competing in professional sports.[1] According to the IAAF she had "one chromosome too many". Medical publications revealed that Klobukowska is a genetic mosaic of XX/XXY. It is understood that testes had been surgically removed at an earlier stage and that she was being treated with estrogens. If she had she been tested one year later at the Mexico Olympics she would have been eligible on the grounds that she was Barr Body positive. Klobukowska has a Barr Body in all of her cells. Athletes without such a Barr Body (inactive X-chromosome) were suspended from competition by 1968 in Mexico City. She gave birth to her son in 1968, and thus must have had a genetic abnormality.

See also[edit]


  1. ^ Ferguson-Smith, M. A., and E. A. Ferris. Genderverificationinsport:theneedforchange? British Journal of Sports Medicine 25.1 (1991): 17-20.

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