You can go up this fire road that brings you to the water tower. When you get there then you follow the trail going up the mountain. You will see a big pile of rocks. There you can go right for an easy ride or left for a technical ride. They are all single tracks. If you want to continue on the trail you can go up another hill which brings you to another big pile of rocks with a cross on it. There is another trail that bring you on the back side of the mountain.
How to get there:
Ranch Santa Fe Road turn of on La Costa Ave and you are at the mountain