My wife and I are looking for new places to ride with our children. Our six year old daughter is on a trail-a-bike and our two year old son is in a trailer. We have ridden the Burke/Sammamish River trail to the point of boredom. We enjoy the Centennial trail and have ridden the Snoqualmie Valley trail also. We are looking for some quiet roads with nice shoulders and speed limits of 35 mph or under ideally. Does anyone have any good suggestions on rides in northern or eastern King County or Snohomish County that you would recommend for a family?