Continue on foot along the four wheel drive road at the south end until you see the trailhead. There are two trails that originate at the Pacific Valley Trailhead, the Marshall Canyon Trail which heads to the east and south, and the Pacific Valley Trail which continues due south into the head of Pacific Valley. Marshall Canyon Trail is an experience in deep old growth timber and a moderately difficult 3 mile climb to the Carson-Iceberg Wilderness boundary where the trail forks. The left hand fork is the Milk Ranch Trail, and the right hand fork is the Weiser Creek Trail. The Milk Ranch Trail leads up to Peepsight Peak and on to Milk Ranch Meadow and Tryon Meadow Trailhead.
Good water is available to filter along the trail even in the driest seasons.
Pacific Valley Trail climbs fairly steeply to the saddle at the top of Pacific Valley and continues south to meet the Highland Creek Trail at Spicer Reservoir. Near the beginning the trail traverses the bottoms of several impressive avalanche zones - and even in summer the destructive power of these winter time phenomena is evident. Higher up the deep forest gives way to high open meadows where wildflowers thrive in peak of summer. From the saddle at the top of Pacific Valley it is an easy scramble to the top of Henry Peak just to the east. A more difficult scramble is to the summit of Bull Run Peak just to the west.