Metro opens early, at 5 a.m. Sunday to help the over 40,000 registered runners in the 38th Marine Corps Marathon.
Officials recommend using the Pentagon Station off the blue and yellow lines. The Arlington Cemetery Station won't open til 8:30 that morning, but will serve spectators immediately following the 7:55 a.m. Marathon start.
Though there will be traffic control, look out for delays. Courses will be marked with 600-700 orange cones. If you can't physically make it, Comcast SportsNet will carry live coverage starting at 7:00 a.m.