US97 across Washington has 3 passes
Satus 3107 ft
Manastash Ridge 2672 ft (I82 section)
Blewett 4102 ft
The drive up to Satus is relatively straight and smooth, with a few more curves on the north side. Manastash is a high speed freeway roller coaster. Blewett is more like the Cascade passes in Washington (Stevens) and Oregon.
The rest of the way in to the border is river valleys, first along the deeper Columbia, and then the broader Okanogan.
97 in BC feels urban busy in the Peachland - Kelowna - Vernon stretch.
The approach to Revelstoke from the south is probably the most scenic and leisurely. Trail to Castlegar is busy highway (divided?), but 6 and 23 follows long lake shores and includes a ferry. There are some good provincial parks along this route.
