Career
She competed at the Winter Olympics in 1968, 1972 and 1976. Her best Olympic results were 4th in the 1500 metres, 6th in 500 metres, and 6th in 1000 metres at the 1968 Winter Olympics in Grenoble. Sundby dominated women"s skating nationally for about a decade, winning the Norwegian allround championships in 1963, 1964, 1965, 1966, 1967, 1968, 1969, 1970 and 1973.