I spent a little time last week on the Northwest Coast. A little camping, a big bike ride, smore eating, and berry picking. It was a great time. I needed a vacation!
The Tour of the Unknown Coast Route is one of the most spectacular routes I've ever ridden. I would recommend that any serious road cyclist travel Mattole Road. You get it all giant redwoods, coastal mountains, surreal coastline views, no cars and some neat places to stop. It's definitely a billy goat ride-- 97 miles with 9700+ feet of climbing.