Colleen Lanné Cox was raised in Tucson, Arizona, and attended the University of Texas from 1998 to 2001. She was a four-time NCAA champion, held American and US Open records in the 100 free and won individual NCAA titles in the 50 and 100 free. During her time at Texas, she was a 22-time all-American and two-time Big 12 Swimmer of the Year. In 2002, Colleen was a silver medalist in the 4×200-meter freestyle relay at the Short Course World Championships held in Moscow. She won a silver in the 200-meter freestyle, as well as gold medals in the 4×100-meter and 4×200-meter freestyle relays at the 2003 Pan American Games held in Santo Domingo, Dominican Republic. Colleen qualified for the 2004 U.S. Olympic team in the 4×100-meter freestyle relay after finishing fifth in the 100-meter freestyle at the Olympic Trials. She earned a silver medal in Athens, Greece, by swimming for the second-place U.S. team in the preliminary heats of the 400 Freestyle relay. Colleen lives in Austin and has two sons, Rowan and Rhett.