roughly follows US Bike Route 1 route is doable, but lots of traffic on Saturday PW Parkway from Minnieville Rd to Old Bridge rd as of Sept 2014. They are building a nice side path, but now the ride is dangerous, use Minnieville Rd (or alt return route instead. The return route is longer, but, I think nicer. Morning traffic on Aden Rd, Fleetwood, Brenttown, Poplar as okay. Lots of traffic coming home. I had 3 cars behind me waiting to pass on an uphill. The outbound route on the road to Jeff Todd way is, I think, safer than the return route on George Washington Hwy and Mt. Vernon trail. Several close passes on GW highway. To follow outbound rt from Lockport Ln to Pollen st. Walk bike for 100m on small trail in woods. The outbound portion of the cross county trail is steep and narrow. Barely usable as a bike trail. On return route, from Dumfries to Waterway to Cardinal would be better than the Dumfries, Spriggs, Minnieville route shown.