Originally Posted by
doctor j
You might want to go out and drive the route.
As Weak Link observed, 28'/mile would not be that bad. On the other hand, if most of the climbing were concentrated in one or two big hills, it might not be a lot of fun.
You could also map the route into
http://www.bikely.com or a similar service that shows the elevation profile. (In fact, you could even search bikely to see if someone has already input that route.)