In April 1964 Porter set the record for the fastest women's 220 yard race held in the United States.

In 1963 she was unable to take up an invitation to attend a running meet in Los Angeles with Peter Snell as New Zealand athletics administrators required her to be accompanied by a chaperone.

[5] The Auckland Star newspaper then started a fund raising campaign to send her to compete with the New Zealand Amateur Athletics Association agreeing to the trip if her expenses were paid by subscription.

[7] In April 1964, Porter competed in Los Angeles and set the United States record for women for the 220 yard race.

[8] Porter competed in one Olympic Games in Tokyo in 1964 making the quarter-final and semi-final of the 100 and 200 metres respectively.