The 10,000m silver medalist from Oregon hopes will square off against the 5,000m silver medalist from Ethiopia.
Dejen Gebremeskel of Ethiopia is the pre-race favorite.
Newly minted Masters runner Kevin Castille takes men's 40+ title.
Defending champions and former Olympians will toe the line.
The two-time Olympian isn't intimidated by anyone in the star-studded field.
Americans Bobby Curtis, Jen Rhines claim third-place positions. 2011 Carlsbad 5000 Complete Coverage Page Click here for photos of the
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He also took home $25,000.
He defeated a highly competitive field with just one shoe on.