South of Klamath and north of Orick in the Redwood National Park, the 11.5 mile Lost Man Creek Trail (aka Holter Ridge Trail) is an old logging road switching back along th eastern boundary through 300 foot tall redwoods over 1000 years old. This mountain bike route has a moderately steep climb. It can be combined with Bald Hills Road and a stretch of US101 for a 20.5 mile loop. The trail crosses a wide bridge that spans Lost Man Creek and offers glimpses of rock pools framed by lush streambanks. Along the route, you will also see five-fingered ferns, wild ginger, tanoaks and deer ferns.
To reach the mountain biking trailhead from the town of Orick, go north on US 101 for 3.5 miles. Turn right on Lost Man Creek Road and go about 1 mile to the trailhead.
From the trailhead, it is one mile to the first bridge, 3.8 miles to the second bridge, 11.5 miles to Bald Hills Road. All the distances are one-way. The first 2 miles are moderately difficult. Then there are steeper grades with switchbacks. If you are looking for the easiest route, shuttle to Bald Hills Road and descend back down over 1,900 feet of vertical.
Overall, Lost Man Creek Trail is the 53rd most popular mountain bike trail of all 132 mountain biking in California.