Tilden Park in Berkeley. There are many great trail runs in this park, but the one I most commonly run is an 8 mile out and back along the Nimitz trail on the ridge. If the fog has cleared off there are amazing views of the bay and Golden Gate bridge.<br><br><img alt="" src="http://www.lmjs.org/files/images/nimitz_way_1_0.jpg" style="border:0px solid;">