Duńska-Krzesińska participated in three Olympic Games. In 1952, she took 12th place in long jump at the 15th Olympic Games in Helsinki. In 1954, she took 3rd, behind Jean Desforges, and Aleksandra Chudina, at the 5th European Championships in Athletics in Bern.
In August 1956, she broke the world record in long jump (635) in Budapest, and equal in November 1956 in the Melbourne Olympics.
In 1962, she took 2nd, behind Tatyana Shchelkanova, at the 7th European Athletics Championships in Belgrade. She lived in the United States of America from 1981 until 2000, then she came back to Poland.
She died 29 December 2015 after long illness.