We stated at Arroyo Park's easternmost trailhead along Old Samish Road. We hiked up to the Chuckanut Falls Trail and then the Hemlock Trail, which is an old road. This is where we started getting into the snow/ice. We hiked up Hemlock to the Salal Trail, briefly hiked that and then we hiked up the Madrone Crest Trail. We dropped down to the Lost Lake Trail and hiked that under some cliffs that had absolutely incredible giant icicles and frozen waterfalls. We hiked to Lost Lake, which is frozen over. We followed the trail around the east side of the lake on the little ridgeline that parallels the lake. We passed a large viewpoint of the lake and then reached the lake outlet. From here I made my way down to the waterfall. The way down was slick and results of a fall could prove fatal, so I strongly advise microspikes if you wish to see the waterfall, which was very cool looking with the ice on it!
We hiked back to the Lost Lake Trail and then hiked up the Rock Trail, which goes between some massive huge boulders and under some towering overhanging cliffs with more great ice displays! Very cool trail. We reached the junction of a bike trail and continued straight ahead to reach the Cyrus Gate parking lot (under over a foot of snow and closed to vehicles). Here there was a great view out to Vancouver Island, Strait of Georgia, the peaks of BC, and even skyscrapers of Vancouver! We then followed the road briefly until the start of the ridge trail and continued north on that. There is a great view of Mt. Baker and the Twin Sisters. We followed the ridge trail north for what seemed like forever, but it was a fun trail despite lots of ups and downs. Be sure to stay right at any junctions along the ridge. Toward the north end of the ridge there were some great viewpoints looking north to Bellingham an the BC peaks beyond. The trail dropped down off the ridge to the Lost Lake Trail, which is an old road. We went left and hiked down until we reached an unsigned junction at a house. Stay right here (going left is a road leading out to Chuckanut Drive) to compete the loop and get back to the TH.
About 12 miles and 6 hours RT. Microspikes strongly advised as there are some pretty icy parts of the trail.