Southeast of Lake Quinalt in Amanda Park, the 14 mile Humptulips Trail (#806) closely follows the Humptulips River through lush hemlock, cedar and bigleaf maple rain forest blanketed by moss and ferns. The trail also parallels FS2204, in case the trail gets too difficult.
To reach the mountain biking trailhead from Aberdeen, follow US101 north to Donkey Creek Road. Proceed northeast on Donkey Creek Road (aka FS22) for about 8 miles. Head north on FS2204 for 3.5 miles to trailhead. The trail ends about 14 miles up FS2204 past NFS Campbell Tree Grove CG.
Overall, Humptulips Trail is the 37th most popular mountain bike trail of all 59 mountain biking rides in Washington.