Kenya's Geoffrey Mutai has won the Boston Marathon in an unofficial 2 hours, 3 minutes, 2 seconds -- the fastest marathon ever run.
The previous best of 2:03:59 was by Haile Gebrselassie in Berlin 2008. Because of the differences in courses and wind conditions, there isn't an official world record in marathons. Mutai's mark is almost three minutes better than the course record set just last year by Robert Kiprono Cheruiyot.
American Ryan Hall came in fourth with a time of 2:04:58.
Caroline Kilel won the women's race, outsprinting American Desiree Davila to win in an unofficial time of 2:22:36. Davila led as late as the final stretch on Boylston Street before Kilel pulled away. No American woman has won Boston since Lisa Larsen-Weidenbach in 1985.
Here's what the pack looked like at Mile 8 in Natick- blistering pace...