Fox competed at the 1995 Pan American Games and was a member of the gold medal-winning 4x200 freestyle relay team. She made the U.S. Olympic team for the 1996 Summer Olympics in Atlanta as a freestyle swimmer, and was a member of two gold-winning relay teams: the 4×100-meter freestyle (where she swam in the final) and the 4×100-meter medley (where she swam freestyle in a preliminary heat). Fox won a gold medal in the 4×100-meter freestyle relay, and bronze medals in the 100-meter freestyle and 100-meter backstroke, at the 1997 Pan Pacific Swimming Championships.
At Stanford, Fox was a 21-time All-American in swimming, a 9-time NCAA champion, and set an American record in the 100-yard backstroke in 1999 with a time of 52.47 seconds.
In 2006, she was named to the Kansas Sports Hall of Fame.