High temperatures didn't slow the field much in a variety of races in Eagle Rock, Calif.
Aaron Braun, who will make his marathons debut, leads the American men's lineup.
The 38-year old from San Diego captured his 22nd national title.
The 38-year-old Keflezighi made his winning move at 15K.
The two-time NCAA Cross-Country champ had a premonition that he'd prevail.
Braun missed Steve Spence's 12K American record by 2 seconds.
The newly minted marathoner is ready to mix it up against a stacked men's field.
There were some fast races on the day before the New York City Marathon!
Aaron Braun leads the American charge.