Look at a (paper) map, it's all up getting there, you can coast back down. Everyone knows that!
Sorry, I wasn't clear. I said that to a city slicker, that it took less gasoline to get downhill from Reno, and they proceeded to lecture me on the subject. I once got more than 40 mpg in a 1976 Corolla station wagon going from the Yakima Valley to the Willamette Valley. Just pick the right roads with the right slope.