Stephanie R. on Loma Verde - Pacheco Valle Ridge Tr...
It's a boring trail but great workout. As you're going up you're facing away from the water so you don't get nice views going up. Going down you get a bit more views but not that many. There isn't a lot of shade so if it's hot bring lots of water. I wouldn't rate this as difficult, it's a moderate hike.
The Queenstone Fire Road trail circumnavigates Blackstone Canyon in North Marin County. To access the fire road on Queenstone off of Miller Creek Road take the Marinwood exit from Highway 101 and head West.
The trail climbs more than 1500' and provides 360 degree views of the Bay Area including Mt. Tamalpais, SF, Mt. Burdell, the Sonoma areas and the Bay waters from Napa to the Richmond-San Rafael Bridge. Mt. Diablo in the East Bay is also visible.
I did a short video about the hike. You can view it here: