 Her record stood until 1973.Before turning to athletics, Falck studied to become a secondary school teacher and trained in handball and swimming.In 1971, besides her 800 m world record, she won a gold medal in the 800 m at the European Indoor Championships and a silver in the 4 × 400 m relay at European Championships; she also helped Ellen Tittel, Sylvia Schenk and Christa Merten to break the 4 × 800 m world record.