Desiree Davila of Hansons-Brooks runs 3 by 3 miles training for Olympic Marathon Trials

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A video by www.Vo2maxProductions.com : Desiree Davila, the runner up at the 2011 Boston Marathon runs 3 by 3 miles at faster than marathon race pace with her Hansons-Brooks teammates. They are all training for the 2012 US Olympic Marathon Trials.