Went camping from SEA>101 W to Fort Flagler state park >101 W and S to Hoh Rainforest>back up 101 N to Second Beach, then back up 101 N and E to SEA via ferry.
If you wanted to adventure I recommend this itinerary. Coming back 101 N and E I saw the sun rising behind the Olympics. No other cars. Really beautiful and breathtaking. I think going E offers better views in general and of the mountain landscape, for example at Lake Crecent.
You also see signs for Kitchen-Dick Rd near Port Angeles if you're going through, which is funny.
Amazing. Did in March. Didn't see a park ranger, saw some fellow backpackers and some day hikers. Needed a wilderness permit from visitors center to hang on my backpack.
Trail is easy to follow, didn't need map or compass. Nice peeks of Olympic peak here and there. Beautiful wide braided turquoise river. Super beautiful. Flat at most times but sometimes hilly. Wide and tall trees. Lots of moss. Some of the campsites that are clearly marked on the trail have bear wire.