Between 1964 and 1980, she participated in five
Olympic Games, winning seven medals (the most by any Polish athlete), three of them gold. She also broke six
world records and is the only athlete (male or female) to have held a world record in the 100 m, 200 m and the 400 m events. She also won 10 medals in
European Championships. Between 1965 and 1979, she gathered 26 national titles and set 38 records in the 100–400 m sprint and
long jump. At her first Olympics in
Tokyo in 1964, she took a silver medal in the long jump and 200 metres, and ran the second leg of the gold medal-winning 4 × 100 metres relay team. She was a double sprint winner at the
World Student Games in
Budapest in 1965. In the same year she set her first world record, breaking
Wyomia Tyus' 11.2 s from the previous year with an 11.1 s clocking in
Prague,
Czechoslovakia, July 9, 1965. She won the British
WAAA Championships title at the
1965 WAAA Championships. In 1966, at the
European Athletics Championships she won Gold in the long jump, 200 metres and 4 × 100 metres relay; and took a silver in the 100 metre sprint. At her second Olympics in Mexico, She won a bronze in the 100 metres, but failed to qualify for the Long Jump final. She recovered from that disappointment, to win the gold medal in the 200 metres in a new world-record time. In the sprint relay the Polish team dropped the baton on the final exchange in the semi-final and finished last. After giving birth to her son, in 1971, she managed a bronze medal in the long jump at the European Championships in
Helsinki. She would compete in the three events at the
Munich Olympics in 1972, the two sprints and the long jump. She would come away with a bronze medal in the 200 metres. In the 1974 season, she became the first woman to break the 50-second barrier for 400 metres, and she set a new world record of 22.21 s for 200 metres. At the European Championships in the
Rome she won the sprint double of 100 metres and 200 metres, beating the favoured GDR sprinter
Renate Stecher; and ran the anchor leg on the 4 × 100 metres relay team which took the bronze. She was ranked number 1 in the world in the 100, 200 and 400 m events in 1974. She would win her final Olympic medal in Montreal in 1976, by winning the gold in the 400 metres in a world record time of 49.28. ==International competitions==