Begin at the San Bruno Trailhead, and hike South and up a slight rolling hill, along the two-lane paved trail. As the trail flattens, continue past the parking along Skyline. The hill will alter between mild rolling hills and flat terrain until the parking lot at Larkspur (on West side of Skyline Blvd.). If you turn back from here, round trip distance is about 4 miles. If you would like to continue to Crystal Springs / Sawyer Camp Trail, continue South on either side of Skyline. On the West, there is an unpaved trail. On the East, use paved Frontage Road. You will reach Sawyer Camp Trail in about 0.7 miles.
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