As of the 2008 Games, none. The 2008 Games will be Sarah Walker's first Olympics.
because she is a bmx rider for new zealand and she is a silver medals
BMX rider Sarah Walker of New Zealand has won 9 medals in World Championship competition (3 gold, 3 silver, 3 bronze) and 2 medals in Supercross World Cup competition (2 bronze). She has not won an Olympic medal. She placed 4th in women's BMX at the 2008 Games in Beijing.
does Sarah walker have brothers and sister
Sarah Walker has one Olympic silver. She also has three World Championship gold, five silver, and three bronze, as well as two Supercross World Cup bronze. See related links for more information.
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Sarah Walker is Famous for B.M.X racing. Sarah Walker is apart of the Olympics too
Sarah Walker was very smart!