Kondratjewa whose special discipline had been at the beginning of the pentathlon, surprisingly won the gold medal over 200 meters at the European Athletics Championships in 1978. At the same occasion, she won the 4 x 100 - meter relay race with the Soviet relay. Thus it became the favorite for the upcoming Olympic Games.
In 1980, she was not officially confirmed a new world record over 100 meters. The 100 - meter race at the Olympic Games in Moscow in 1980 was a very close affair; the first five were separated by only a tenth of a second. The photo finish showed that Kondratjewa had beaten Marlies Goehr (GDR ) by a mere 0.01 seconds. Kondretjewa pulled a muscle in this race, so that they could no longer compete for the 200 - meter race and the 4 x 100 - meter relay.
Since their country boycotted the 1984 Olympics in Los Angeles, Kondratjewa could not defend her Olympic title. She married twice the Hammer Throw Olympic champion Yuri Sedych, but was later divorced from him.
At the Olympic Games in Seoul in 1988 she won the 4 x 100 - meter relay bronze.