As a post-collegiate professional runner, Rhines has won three USA 15K national titles (1998, 2005, 2011), a USA half-marathon championship (2011), and was USA 10,000 meter champion on the track in 2002. She competed in the women's 10,000 meters race at the 2000 Sydney Olympics, and finished 16th with a time of 31:26.66. In the 2004 Athens Olympics, she competed in the women's marathon and finished the race in 34th place with a time of 2:43:52.