Just FTR, "comfort bike" is a specific configuration, pretty much the same as a hybrid - hardtail, sprung forks and seatpost without damping, buckhorn to flattish bars, hybrid frame geometry, rack bosses or integrated racks, wide wheels with street tires, low end MTB components. My Trek Navigator is an example. Basically a low-end UAV. It weighs upwards of 40#, and 20 miles on that bike is a very long ride. All day is out of the question AFAIC, even with the road saddle I slapped on it to replace the OEM saddle, one of those things that's bigger than my head. Not at all the same thing as road bikes set up for sport-touring or day rides.