Black Diamond Mines Regional Preserve
5175 Somersville Rd
Lots of trails to choose from and mining sites are sometimes open. Free entrance during the week, $5 on weekends. Extra charge for dogs. Nice views!
Mill Creek Greenway
5023 Blue Hole Road
Walk or bike! The paths are wide and you get natural and urban scenery. Their a huge playground, grills, and open spaces for kite flying. You can also see remains of the May Flood.
Contra Loma Regional Park
1200 Frederickson Lane
If you want to get into the East Bay and do some real hiking, Contra Loma is the place to do it. There is a lake for your viewing pleasure, and after a few miles it connects with Black Diamond mines.
Antioch > Outdoor Recreation > Scenic Walks & Hikes