October 23, 2009 3:14 pm Marine Corps Marathon This Sunday The Marine Corps Marathon is expected to bring out thousands of runners and spectators this Sunday. Several roads in Arlington and D.C. will be closed for the race. US & World Videos 2:48 Forecast: Gradual warming trend 1:25 Bay Area high school seniors honored with Dave Goldberg Scholarship 1:10 Bay Area app monitors problems for people living with Parkinson's 0:26 Kaiser Permanente data breach may have affected millions 1:35 Kari's forecast: Gradual warming trend