Just met up with my sister and went for a real quick, 6 mile out 'n back ride, out in West Creek Pkwy business complex, west of Richmond, VA. My sister has one of those ladies "townie" bikes as she calls it, and is only a 6 or 7 speed. 9-10 mph is about all she does, so that was fine. I kept my C&V '85 Fuji on the lower front crank (42T) and the rear 22T (3rd sprocket) on the Suntour freewheel. I pedaled, coasted, pedaled, coasted, etc... and just enjoyed the ride...
6 mile out 'n back, 37:44 time, 9.6 mph...
Edit: Sorry... I shouldn't talk like this, after 35 wonderful years, but I'm just one of those husbands, who's wife just WILL NOT go out riding. It takes an act of God, just to get her to go 1½ miles around the neighborhood.