Parker Ranch Trail links to Fremont Older Open Space. There is a real vertical streach that's challenging. Also, at prospect road, when you take the back roads, you see the back yard of rich homes and they are some times pretty. http://www.saratoga.ca.us/pdf/trails/parker%20ranch%20trail.pdf
Reached 1/4 the way on July 15th, 2006.
Looks like next to the rail road, there might be a trail that could be really taking all the way. Need to check this out some day.