In mid-2000, Kostomarov called Navka and asked to skate with her again. They were coached by Alexander Zhulin in Hackensack and Montclair, New Jersey. Navka/Kostomarov won the World title in 2004 and again in 2005. They also won three European titles from 2004–2006. They then won gold at the 2006 Winter Olympics in Turin, Italy. At the age of 30 years and 313 days, she became one of the oldest female figure skating Olympic champions.