This park was once a landfill that was filled in and turned into a park. There is a network of short single tracks and some fire roads. Very small park, but it is good lunch time workout.
Located at the corner of Marsh Rd and Bayfront Hwy. Take either 101 to Marsh, head east. Or take Dumbarton bridge to it.
http://www.singletracks.com/item.php?c=1&i=10402