In 1961, she won a gold medal at the Italian-Hungarian swimming competition in San Remo, and as a member of the 4×100 meter freestyle team at the Hungarian National Championship, she finished in third place.

In the same year, in Piesteritzben at the East Germany – Hungary meeting she won a gold medal at the 100 meter freestyle.

In 1965, at the annual Universiade (an international sport event specifically organized for university students by the International University Sports Federation) in Budapest, Hungary, on the 4x100 meter freestyle relay she won a gold and a bronze medal on 100 meter butterfly.

She earned a teaching degree in Hungarian literature, history, and physical education and later worked as a museologist.

Four events within the competition were established in memory of Eva Erdelyi and in 2010 the city of Eger named a street after her.