 During and after World War II, she won American national championships in the 100 metres (1943, 1944 and 1948), the 200 metres (1939–40 and 1942–8), the discus throw (1941–2), and the long jump (1938–46, 1948 and 1951).In 1947, she accepted American citizenship, and she later married aviation draftsman Harry Olson in 1956.Although the marriage did not last long, she continued to use the name Stella Walsh Olson for the rest of her life.