Her personal best times were 8.59.15 minutes in the 3000 metres (indoor), achieved at the 1996 European Indoor Championships in Stockholm;[6] 15.20.44 minutes in the 5000 metres, achieved in July 1996 in Saint Petersburg;[7] and 31:36.76 minutes in the 10,000 metres, achieved in May 2003 in Palo Alto.[3]
In the great city marathons she has had success at the New York and London Marathons. She won the 2000 New York City Marathon with the time of 2:25:45 hours. In 2001, she finished sixth in 2:26:18 hours. She finished third at the 2002 London Marathon in 2:22:33 hours, fourth at the 2003 New York City Marathon in 2:25:00 hours and second at the 2006 London Marathon in 2:21:29 hours. In 2008, she finished second at the New York City Marathon in 2:25:43 hours and fifth in the London Marathon in 2:26:45 hours. She then finished second again, at the 2009 New York City Marathon in the time of 2:29:00 hours.