Walton began her Paralympic career at the 1964 Summer Paralympics in Tokyo. She took part in two athletics events, the slalom and the wheelchair dash, winning gold in both. At the 1968 Games in Tel Aviv Walton competed in numerous track and field disciplines, the breaststroke and backstroke in swimming, and singles and doubles in table tennis. She won at least a silver medal in all three areas, finishing the Games with six medals three of which were gold.