If you are looking for some family time adventure, you can go to Bellingham (Galbraith Mountain) and mountain bike the Bunny Trails, Dog Patch, and Lost Giants Trails. Those trails are a little more beginner/family friendly. It is sad that they clear-cut all those trees, but at least they were nice enough to keep the trails clear for bikers. These iphone photos aren’t the best quality, but at least you get the idea of what it’s like there.
Click here for directions to Galbraith Mountain.