Since I was editing the maps I removed Seattle and added Astoria so you can see the whole route. At 200 miles this could easily be a nice 3-4 day trip, preferably 4. Don't miss Cape Disappointment State Park and the endless beaches up around Twin Harbors or Grayland Beach State Parks. There are definitely a few cutoffs and options if you want to shave off a few miles, but they often will have more logging traffic and/or worse roads. Most of them are fine though in my experience. This is definitely the most scenic route between Seattle and Astoria.