First American male since 1983 to win and obviously a very significant and emotional win for him, Boston, and the US. To win on the anniversary of the Boston bombings is quite a statement. He ran a great race pushing the field and taking a big lead at the 10 K mark, holding on the rest of the way.
He has now won the New York City Marathon and the silver medal in the Olympics. He ran his personal best time according to Boston.com, though I think he has run faster. The Boston marathon is not an easy course to do your personal best.