Highway 97 to Leavenworth Wa

Highway is a nice drive. Mountain passes? Yup. Sadus pass can be iffy if the weather is bad. The road is generally good though, on the north side it gets twisty. From there on you drop down and climb back out of Yakima valley past the bombing range. The road is mostly 4 lane, but thru the mountains to I90 and then back to 97 north. Expect 3 to 4 hours getting there. From I90 97 is slow going two lane road.
Where are you now? The climb out of the Columbia canyon is long and pretty steap too.