I have done part of the trail by car. Of course, the road looks completely different on a bike compared to from the passenger seat of a car. I didn't think it was particularly hilly, but I live in WV. I think Indysteel's description is pretty good-not too long, but of varying steepness. For what it is worth, I wouldn't want to do it alone. I didn't see any drunk drivers, but I would be concerned. There can be safety in numbers, and it is always good to have someone to call 911. Only kind of related, there is a relay running race there that looks like fun.
I stand and rejoice every time I see a woman ride by on a wheel...the picture of free, untrammelled womanhood--Susan B. Anthony