Northwest of Trout Lake, the Lewis River Trail (#31) is a fabulous 9 mile one-way mountain bike ride along the river. This lowland trail follows the course of the Lewis River as it meanders through a magnificent old-growth forest of Douglas-fir, western redcedar and bigleaf maple. Five spectacular waterfalls will delight you as you explore this route. The trail totals 14.4 miles in length, but can be accessed at five different points: Curly Creek viewpoint on Forest Road 9039, the Upper Lewis River bridge on Forest Road 90, Lower Falls Recreation Area on Forest Road 9054, Middle Falls Trailhead on Forest Road 90 and Quartz Creek Trailhead on Forest Road 90. The trail description is broken into three sections. The first section is the barrier-free portion that takes you to views of Curly Creek and Miller Creek falls. The second section starts at Curly Creek viewpoint, heads north and ends at Lower Falls Recreation Area. The third section describes the trail from Lower Falls Recreation Area to the trails end at its junction with Quartz Creek Trail #5. Come and discover the beauty of the Valley of the Falls.
The Crab Creek Trailhead is where Lewis River FR 90 and Lewis River trail No. 31 cross a mile or so downstream from Lower Falls Recreation Area.
The Curly Creek Trailhead is where the North Fork of the Lewis River Crosses FR 9039 near Curly Creek Falls. This is a popular trailhead for Lewis River trail No. 321.
Overall, Lewis River Trail is the 2nd most popular mountain bike trail of all 59 mountain biking rides in Washington.