I did my first two cross country rides on a hybrid. Not easy but it can be done even at 13 mph. All the road bike has done has given me more endurance, but it only added 2 mph an hour to my general speed although at times, with the rare tailwind I can get an average of 16.5 mph level and even higher going downhill.

I will say that the road bike is easier to get in and out of the car because of its weight.

marni