I started up this one with road tires, and quickly decided it wouldn't go very well. It looks like it could be fun with cross tires, so I'll try to get back and do that some day. In the mean time, I can't vouch for the validity of the gradients shown below.
Goat Peak is located in Massachusetts. It is 459.5 meters long with an average gradient of 9.2% and a maximum gradient of 31.4%. Find similar hills.