Golden and Silver Falls are a pair of waterfalls on different tributaries of the Coquille River, about 30 miles east of Coos Bay, Oregon. A couple short trails lead to views of the falls.
The trailheads for Elk and King Mountains are located in the Oregon Coast Mountains along Hwy 6. Elk Mountain trailhead is at milepost 28, and Kings Mountain is at milepost 25. These are in the Tillamook State Forest, but are unique enough to have their own section here.
Both the summit trails are...
Sweet Creek is located about 10 miles south of Mapleton, Oregon in the central Oregon Coast Range (not far from Florence, OR).
A well-constructed trail hugs the walls of a waterfall-laden canyon for about a couple miles.
The Tillamook State Forest is located in Northwest Oregon. There's a really good map of the forest put out by the state forest agency. If you plan to spend any time in the forest, it's a good idea to pick one of these maps up.
There are two "Drift Creeks" near the Oregon coast, within 50 miles of each other. The northern Drift Creek Falls is near Lincoln City, the southern Drift Creek Wilderness is near Waldport. Both harbor small examples of old growth forest that's nearly all gone.
The Cummins Creek Wilderness is adjacent to Cape Perpetua National Scenic Area along the coast of Oregon - just south of Yachats, OR. The Cook's Ridge Trail heads up from a parking area in the Scenic Area. This trail is not in the Wilderness area, but rather north of it.
A NW trail park pass is required...
Niagara Falls are located southeast of Tillamook, Oregon, down a bunch of winding forest roads... Get good directions to the trailhead! from 101 at the town of "Beaver", turn east on Nestucca River Rd (the main road east). After about 11 miles, turn right on road 8553, which might not be marked, but it...
Marys Peak is located just west of Corvallis, OR. Hiking trails reach the top of the peak from various elevations. But, it is possible to drive nearly to the top of the mountain.
You'll need a NW forest pass to park at the trailheads... and/or a Sno-Park pass in winter.