From the Cemetery Lane/McLain Flats Rd. trailhead, the trail starts climbing up Red Mountain. There are great views of the surrounding peaks. The trail continues to switchback along the side of the mountain through shrub oak. In about two miles, the trail enters the aspen groves. Stay on the main trail through the aspen, there are several faded spurs along the way. The trail follows along the ridge entering areas of spruce and coming out on an old road. Follow the road to a sign marking the Sunnyside Trail off to the right. The trail becomes a single track again and descends toward Hunter Creek. The Sunnyside Trail ends at the intersection with a 4 WD road (the left fork on the road goes to Van Horn Park), but you can pick up the single track Hunter Creek Trail on the other side, which descends into Hunter Valley.

At the trail junction at the bottom in the Hunter Valley, turn right and continue for about 1/8 mile to the Tenth Mountain Bridge. Cross the bridge and head right, following the single track through the meadow. The trail descends steeply through the trees and crosses Benedict Bridge. Take an immediate left just after the bridge. The trail follows Hunter Creek crossing over the creek several times. The last section is mostly boardwalk and ascends steps ending behind the Hunter Creek Condominiums in Aspen. If you haven't done a car shuttle you can walk into town and catch the Cemetery Lane bus back toward the trailhead.