Kastor won her bronze medal in the marathon at the 2004 Olympic Games. She has also won 20 national titles and holds eight national records; she currently holds the American record in the 12K.
Kastor will face a field of elite runners at this year's Bay to Breakers, including the defending champion Lineth Chepkurui of Kenya and her Beijing Olympic teammate and Oakland native, Magdalena Lewy-Boulet.
ABC7NEWS.COM is the exclusive destination for live video streaming coverage of the /*ING Bay to Breakers*/ 2009. ABC7NEWS.COM will be the only place, on-air or online, where you can watch the event LIVE. Our coverage of the annual San Francisco 12K race takes place on Sunday, May 17, from 7:45 - 11:00 a.m.