Kind of a cute idea, although if I'm seeing this trail correctly, you wouldn't be starting at the edge of the Facebook parking lot--you cross a hill, then cut through an elementary school, walk a few blocks to Junipero Serra and start up the trail there. Also, the trail itself is not very wooded--more like grassy.
http://maps.google.com/maps?q=Facebook+Offices,+South+Califo...