Thanks @
bcj. I've driven those roads at different times of year in everything from sporty cars to expedition 4X4's. In a way, you're fortunate not to have encountered Goober in his jacked F-250 on 35's looking for trouble (experiences in sports cars forced off the roads you pictured).
At least annually I run with an expedition group that explores ghost towns from Wild West days sometimes running in ruts made by wagon trains 150+ years ago along the Oregon Trail. It's so beautiful, remote, quiet and scenic, a complete change of pace from sports car runs on pavement.
Getting there is half the fun since the group takes special pride in recovery techniques deployed about every hour.
Once at the destination we all camp and cook in style often with freshly caught fish. On a clear, desert new moon night the stars are so thick it looks like a campfire overhead but it's the Earth's rotation as the Milky Way streams by.
Anyway, you chose a great circuit that shows most of all four types of major PNW topography within a (long) day drive for the ambitious: ocean, valleys, mountains and high desert, nice.