BOSTON - APRIL 18: Elite Women runners races up the Heartbreak Hill during the Boston Marathon April 18, 2011 in Boston.  Caroline Kilel  (Kenya) won the womens category with 2:22:36.
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BOSTON - APRIL 18: Elite Women runners races up the Heartbreak Hill during the Boston Marathon April 18, 2011 in Boston. Caroline Kilel (Kenya) won the womens category with 2:22:36.