National Marathon course
The fifth annual SunTrust National Marathon and Half Marathon begin at 7 a.m. Saturday. Intermittent street closings will be in effect from about 6:45 a.m. to 1:30 p.m.
SOURCE: D.C. Department of Transportation; Bob Thurston, course certifier | Mary Kate Cannistra/The Washington Post - March 19, 2010
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