Yesterday my roommate and I went for a 36 mile ride outside of Washington, DC. I only made him stop for pictures once. The C&O Canal is a great recreational asset in the DC area, and you can cover some serious ground and pretty quickly forget you are outside of the nations capital.
A couple of Stats:
Number of miles: 36.3
Number of beavers spotted: 1
Great blue herons: 5
Couples interrupted In flagrante delicto dead center of the single track:1 (BOTH DIRECTIONS!)