Top men take a wrong turn, adding more than a mile to the course.
Aggressive start helps Kenyan to course record.
The American was in the hunt for victory all the way to the finish line.
Mutai breaks men's course record as Keitany runs away with women's race.
Winners will compete in XTERRA Trail Run World Championship on December 4.
Check out Competitor.com's complete coverage of this morning's races!
Pair of UCLA alums win men's & women's Masters races.
Pre-race afterthought breaks the tape in convincing fashion.
Josh Cox wins marathon, goes on to set U.S. 50K record, just misses world mark. Mayeroff wins women's race; Forrest, Perez take half
Kenyans sweep marathon; MacPherson, Pritz win half marathon and qualify for 2012 Olympic Marathon Trials.