Anonymous wrote:NP. Here are some links to threads about Seattle and Portland:
http://www.dcurbanmom.com/jforum/posts/list/377554.page
http://www.dcurbanmom.com/jforum/posts/list/398702.page
I love Seattle, Portland, and Northern California, but I think trying to do a road trip that encompasses all three with two young children is going to be hellish.
I recommend either doing Portland and taking day trips to Mt. Hood (doing the Columbia River Gorge on the way) and the coast or doing Seattle plus short trips to San Juan Islands, Mt. Rainier, and Vancounver Canada. Seattle plus Vancouver would be my first choice.