This 45 mile route in Olympic National Park begins at the bottom of Tunnel Creek trail (accessed from the Dosewallips side; about a half mile from where the wash out, and now trailhead, begins). Continue on Tunnel Creek towards the trail head sign located on the other end of the trail. Once on the other side of Tunnel Creek, continue on NFD road 2740 and take a slight left onto the road towards the trailhead for Lower Big Quilcene. The route continues on Lower Big Quilcene until it meets Upper Big Quilcene (this is about the mid-point and good place to replenish supplies, if necessary. Continue on Upper Big Quilcene, approaching Marmot Pass. Once at Marmot Pass, continue on Constance Pass trail towards Home Lake. You will reach the false summit of Constance Pass, the summit and then begin to descend towards the Dose Forks junction. The route continues on and eventually ends at the Dosewallips River trail, passing the old ranger station and campground.