Starting a program and using this (http://tour.diabetes.org/tdc12/sampl...ingprogram.pdf) "10 weeks to 60 miles" as a guide (I am riding in that event fwiw). Any suggestions? Can already bike 10-15 miles solidly. Other programs available?

Also, for this ride and future rides, I ride a Trek Fx series. Is that frowned upon in rides, etc.
(outside of being at a disadvantage to a road bike)?