BOSTON - APRIL 21:  Dire Tune (R), in bib number 5, leads the Elite Women at the 112th Boston Marathon on April 21, 2008 in Boston Massachusetts. Dire Tune outran Aleytina Biktimirova in bib number 8 by 2 seconds in the final 200 meters to win the women's division with a time of 2:25:25. Robert Cheruiyot from Kenya won the men's division, his fourth Boston Marathon victory, with a time of 2 hours, 7 minutes, 46 seconds.  Seven-time Tour de France winner Lance Armstrong finished 488th in 2:50:58.  (Photo by Brian Ach/WireImage)