Afterwards, she concentrated on the 400 metres, and she competed in that event in the 1964 Summer Olympics in Tokyo, when it was on the Olympic program for women for the first time. Though not impressive in the heats, Cuthbert won the title for her fourth Olympic gold medal, beating Ann Packer of Great Britain in an Olympic record of 52.01. She is the only Olympian, male or female, to have won a gold medal in all sprint (running) events: 100, 200 and 400 metres. She subsequently verified her retirement for good after Tokyo. Also in 1964 she received the Helms Award for her sporting contributions.