There are some very tough hills. Lots of up and down.
Hiking poles are highly recommended.
And don't be afraid to just get down on your butt and scoot down a steep hill. We passed by a couple of hilltop ponds, but no moving water. The leaves were beginning to fall, so several beautiful vistas of far off hills and towns were visible. The trail follows along some nice ridge tops, and it's all enjoyable hiking. Have plenty of water to get you up those hills, though.