Rode out to Neah Bay recently, and if the weather is good this is a fantastic ride. Hwy 112 leaves Hwy 101 just west of Port Angeles and you have good road and wonderful views, but the road does not hug the coast for most of the route. Gentle rollers and only a few real hills. My wife and daughter met me, as I would not have had the legs for the 88+ miles each way. It's an extra 9 miles out to Cape Flattery.
The main caution is about the logging trucks. If you go on a "work day" do not ride west to east as the 18 wheelers + 55 mph limit + twisty road would be NO FUN. If the trucks don't run on Sundays or holidays, then a tailwind certainly beats a headwind.
There's some pics on the 50+ Forum with a title of Birthday Ride