Once you start going up or down, expect to be doing that for a while, here.
Carvin's is kind a like Douthat minus the Pisgah like portions. I would have sworn that I was on the switchbacks of Buck Hollow in Douthat as I scampered down the switchbacks on Hi De Ho!
Being my first SS ride in a while, I figured that 21 miles was enough given the 3500 feet. I will bring the geared bike back tomorrow.
Carter turned me on to VES website that has a great map and GPX files for the Gamut.