From Skyline College, you'll be shocked by how quickly you can leave civilization. Begin the climb through the trees to a view of Rockaway Beach. You'll have some great ocean views during this portion of the trail.
The trail turns away from the ocean, and you view the valley below. Especially on a clear day, you'll see San Andreas Lake along with the San Francisco Bay. There will be two steep climbs that eventually lead to the top of a ridge. This is a gradual climb of about 600 feet of elevation. The path is smooth most all the way.
Once on top, you can continue on the Sweeney Ridge Trail or head down the Mori Ridge Trail.
Watch out for mountain bikers.