Belenkaya and Igor Moskvin won their first national medal, silver, in 1950. After another silver in 1951, they took gold for three consecutive years from 1952 to 1954 and then placed second behind Lidia Garasimova / Yuri Kiselev for the next two years. In 1956, Belenkaya/Moskvin were sent to their first and only European Championships and finished 11th at the event in Paris. In 1957 and 1958, they finished third at the Soviet Championships, behind Nina Zhuk / Stanislav Zhuk and Ludmila Belousova / Oleg Protopopov.