[QUOTE=balto charlie;18123051]here is a route that uses a lot of trails but some what lengthy. The section from DC to Bowie in enjoyable.
D.C. to> ANNAPOLIS, MD.; 46 mi. one-way (9.5 mi. offroad, w/Q-Sh.) at Bikely.com

I think Charlie's route is a fine route, let me say I've ridden West St 450 Defense Highway (all the same street different names) all the way from Annapolis to route 3 some unpleasant spots with traffic, the worse making the left turn on 3, but not undoable and kind of my preferred way of getting out of the confusion. One reason is that section of Governers Bridge that crosses the Patuxean(sp) river has been closed - there is no problem lifting your bike up over the stone pile barricade and riding down to the bridge crossing it and riding up out of the valley (it's a neat little metal bridge)

If you're not in a hurry for a route I can draw up an alternative one, trying to learn OpenStreet Maps, but Charlie's route is probably the preferred route.