Anthony Chabot Regional Park

I have spent many a happy hour hiking in the deeply wooded trails of Anthony Chabot Regional park. The park is in the Oakland Hills, touching Oakland, San Leandro and Castro Valley. It is bounded on one side by Skyline Bl and the other by Redwood Rd

For me the trail head a the top of Golf Links Road, at the very start of Skyline is the closest to home and offers a good mix for hot or cold days.  I like to head NW on Goldenrod trail, this is a bit exposed, but offers excellent views of the Bay.  A return path along the shady creekside offers a cooler stretch.  Walking along the creek does mean a bit of a climb back out of the park, from the stone bridge along the not too steep Jackson Grade.

For an East Bay hike, it's pretty good, and though the trail is busy, you are not in the crowds.

Links

Official park website:- http://www.ebparks.org/parks/anthony_chabot
AllTrails:- https://alltrails.com/explore/trail/us/california/goldenrod-loop