WARNING! Hiking and outdoor related sports can be dangerous. Be responsible and prepare for the trip. Study the area you are entering and plan accordingly. Dress for the current and unexpected weather changes. Take plenty of water. Never go alone. Make an itinerary with your plan(s), route(s), destination(s) and expected return time. Give your itinerary to trusted family and/or friends.
To hike Take Ygnacio Valley Blvd. east from Interstate 680 about 6 miles to Oak Grove. Go right on Oak Grove for about 1/2 mile, then left on Valley Vista. Take Valley Vista a mile to its end at Boundary Oak Golf Course. Park in the large lot directly across the end of the street from the golf course.