The Kenyan is now in first place for the 2012-2013 series.
The East African nation didn't live up to expectations at the Games.
The marathon world-record holder isn't sure if her career is over.
The New York City Marathon should decide the women's race.
Will an American runner reach the podium in London?
The top American marathoner has faced off against Olympic favorites.
The two Kenyan champions are as close as possible.
She's been a front runner her whole career.
She shares some tips for her Kenyan teammates.