Darrell, the uncommonly friendly one. from Jeff City, Mo. or there abouts. on 2/16/2012 8:35:14 PM:
Obie, I guess it is about impossible for someone else to translate your 12 to 14 mph to an equivalent mph on the Katy. I can say this, I am near the top of that age bracket and can ride all day at 10 or 11 mph, with trunk and handlebar bag, on the crushed limestone. The weight of your load will make a difference, but you should be able to count on about 10 mph with no problem if you are use to riding. Slower if it is wet, of course.
I think most people on a casual ride probably ride 8,9,10 mph. Good luck and enjoy your ride.