In 2013, the Tualatin Hills Park & Recreation District completed a missing 1 ½ mile section of the paved Westside Regional Trail over 470-foot high Mount Williams. From the paved trail, you can divert to the summit of Mount Williams and then continue on an even newer soft surface trail that connects to a series of natural corridors. To extend this walk, take neighborhood streets down to South Johnson Creek and find the Summercrest Park trail that runs along the creek’s riparian corridor. The paved Westside Regional Trail leads up into the powerline corridor about 30 yards above the intersection with Hart Road. It’s two lane and bikes come fast, so stay on the right side. Individual hawthorn trees dot the lawns here, and you’ll cross a small brook before winding up through a planting of pines above a play area. Pass an old apple tree, and cross Burntwood Way. The trail snakes up the south slope of Mount Williams through thickets of hawthorn and blackberry, passing a gravel path to the left. On the east shoulder of Mount Williams a mature forest of Douglas-fir, western hemlock, and Pacific madrone forms a wall to the right. You’ll get views to the Tualatin Hils and Forest Park straight ahead. Then you’ll begin a looping descent that enters the woods and comes to a junction above Davis Road. Make a left here for Thornbrook Park. The wide gravel trail crosses the powerline corridor to meet another junction. Go right here on the signed Mt. Williams Trail. This tread traverses up through an understory of Oregon grape, sword fern, trailing blackberry, and young madrones. At the next junction, where the new section of the Mt. Williams Trail breaks off to the right, instead go left. Pass below a cell phone tower and continue up to a grassy expanse near the summit of the hill. A couple of oaks add to the ambience here, but there are no views to be had, so return to the junction below the cell tower, and make a left. This narrower tread heads up under mossy bowers of hazel, and then begins a traverse that passes thro
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