Marita Koch (born 18 February 1957), married name Marita Koch Meier, is a German former sprint track and field athlete. During her career she collected sixteen world records in outdoor sprints as well as fourteen world records in indoor events. Her record of 47.60 in the 400 metres, set on 6 October 1985, still stands. Only once since then (Marie-José Pérec at the 1996 Olympics) has another athlete come within a second of her time. Perec was also coached later on in her sprinting career by Koch's coach, Wolfgang Meier.