The first few miles from Dover to Sandpoint, to Boyer, are on a bike path. Boyer to Schweitzer Cutoff Road is mostly a bike lane. After that, it's fairly narrow shoulders and the climb itself has no shoulders, but very little traffic. The grade of the slope is between 3 and 8 percent according to my computer. The climb itself on Schweitzer Mtn. Road is almost exactly 9 miles with about 2400 feet of climbing. You'll be coming back down from the end point, which makes the ride longer.by bleckb