traveling from Pacific City, Oregon and want to visit the San Juan Islands. Is it crazy to pull a travel trailer thru the Seattle area? Thought about parking it in an area like Burlington and then tak...
The OP lists NH as location. Assuming that means New Hampshire, it means they probably are used to dealing with east coast traffic. Seattle shouldn't be any worse than Boston/NY or Chicago (on the way west).
Olympia to Marysville is a continuous stretch of urban freeway, with 1 or 2 choices, plus city streets. It can be bypassed on west via US101 or routes up the Kitsap Pennisula, but that requires some ferry rides to get the San Juan ferries.