A five mile loop in Purisima Creek Redwoods Open Space Preserve. Super limited parking so a good one for an early start. Descend Grabtown Gulch Trail for a little over two miles (and it doesn't really stop going down). Then after about five seconds along Purisima Creek ascend Borden Hatch Mill Trial all the way back to the top.
Hike starts at: 37.422216, -122.338163. View in Google Earth.
(Related: San Pedro Valley Park Waterfall Loop; Bull Valley Trail to Port Costa; Bay View and Shoreline Trails at China Camp State Park)
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