55 has a fairly good drop into Horseshoe Bend. Been years since that way maybe 4-5 miles. Don't really remember anything special about leaving McCall.
Going to Ontario and taking 95 is about the same time wise, maybe a little faster.
95 near White Bird you will have about a 7 mile 7% climb. Nothing real exciting on the north side. Then another 7 mile 7% climb pulling out of Lewiston. Another climb south of CDA 40 miles, (?) I don't recall the the area it was at, everything was white and looked the same.
At the top of Lewiston Grade you can take 195 up to Spokane then I-90 to CDA. It is rolling hills but dry land. 95 is more scenic IMO but 195 is quicker and straighter.
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