Trails are mostly singletrack with a few steep, but short climbs. The mountain bike trails intersect with hiking trails quite often.<br />
Mostly mellow singletrack that is great for beginners, but the climbs/descents might be a bit tough for them. <br />
There are a few jumps and small rock gardens but all have bypasses.
From US 101, head south on Las Positas Rd for about 1.5 miles, turn left on Jerry Harkin Parkway. Trail starts in the back parking lot.
http://www.singletracks.com/item.php?c=1&i=6632