Brewster enjoys training with the Pacers Pentagon City and Greenberry fun run groups. He has completed two marathons, the 2008 and 2009 Marine Corps Marathon with a PR of 3:58. He also really enjoys running in the Army Ten Miler, which he typically does in preparation of the Marathon. In High School he lettered three times in Cross Country, but did not really start to run until going to Boston to watch the 2008 Boston Marathon. He has trained with Sandy’s Greenberry runners since moving to the DC area in 2008, but recently moved and now trains with the Pentagon City AM group.