[1][2] Hansen won a gold medal in the 400-meter individual medley at the 1985 Pan Pacific Swimming Championships.

[1] At the 1988 Olympics in Seoul, South Korea, she competed in the B Final of the women's 400-meter individual medley and finished in eleventh place overall with a time of 4:51.03.

Four years later at the 1992 Olympics in Barcelona, Spain, she swam in the event final of the women's 400-meter freestyle and finished in fourth place with a time of 4:11.50.

Hansen advanced to the final of the women's 800-meter freestyle, and recorded a time of 8:39.25 in a seventh-place performance.

[4] Hansen has served as an assistant coach for the Florida Gators, USC Trojans, Maryland Terrapins, and UCLA Bruins women's swimming teams.