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Former Naval Academy track and cross country standout John Mentzer will compete tomorrow for a berth on the United States' marathon team for the 2008 Olympics in Bejing.</p>
<p>Mentzer has been training with another former Naval Academy runner Jon Clemens, who was hoping to shave as much as four minutes from his personal best 2:19:33 that was established in last year's Chicago Marathon. That was 27 seconds better than the Olympic Trials qualifying time of 2:20:00....
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