Bruce, the trail basically begins at McCollum Park, and parallels the Mill Creek Town Center to 164th, where it crosses over and becomes a boardwalk (narrow, not really bike friendly) until 180th. Then it disappears until you get down to Thrashers Corner (208th) where it picks up at Centennial Park and then crosses Hwy 527 into the Canyon park business area, crosses 228th and picks up alongside 27th and then into Woodinville... definitely tricky and some of it is still gravel. You can actually see it on Google Maps if you zoom in.