There are actually small/narrow trails that go from the Pentagon parking lot over to the Memorial Bridge and/or the Mt Vernon Trail. They are mostly used by runners who work at the Pentagon but they do exist.brad nicholson said:MB1, i live out in burke, va but take the metro bus to the pentagon metro every day. i want to start riding my commuter bike from pentagon to georgetown where i go to school. what is the best way to get out to the bike trail along the virginia side of the potomac? do you know? i looked on the bike map for the dc area but it does not show enough detail.