The Washington & Old Dominion Trail starts in southern Arlington and follows the old railway bed through historic Leesburg and on to Purcellville, in the Allegheny foothills. Its 45 miles are paved and spacious, winding their way through the Virginia suburbs.

The easiest place to pick up the trail is outside the East Falls Church Metro station: exit right and turn right again onto Tuckahoe St, then follow the signs. For the truly ambitious, it’s a short jump from here to the 2000 miles of Appalachian Trail going south to Georgia and north to Maine.