The current women's world record holder in the marathon, Radcliffe bested her own world record by nearly two minutes at the 2003 London Marathon, running 2:15:25. The British runner also won the London Marathon in 2002, 2003 and 2005, the New York City Marathon in 2004, 2007 and 2008, and the Chicago Marathon in 2002. While the men's marathon world record has been beaten five times since 2003, Radcliffe's record hasn't been threatened in over a decade. She also holds the world record in the women's 10K, running 30:21 at the World's Best 10K in San Juan, Puerto Rico.