A few days ago, fellow geocacher GeoRedheads and I hiked the Ohlone Wilderness Trail, from the Del Valle Reservoir 10 miles SE of Livermore to the Sunol Regional Park headquarters. Total distance: 36.3 km, (22.55 miles). Total ascent: 1835 meters (6020 ft). What a great (although quite arduous) hike!
Here is a map of the hike, followed by some photos.
Map of hike, from Del Valle Reservoir, upper right, to the Sunol trailhead, lower left.
View of Del Valle Reservoir and hills above SE Livermore.
DHB and his friend John Cunningham at the top of Mt. Rose.