Overall, this is an incredible 15-mile ride. The loop has views that tourists come from a world away to take-in; roads in very good condition with a bike shoulder for much of the way; and, interesting and varied terrain.
If this ride were a restaurant, it would earn a 3-star on the Michelin scale!
Beginning at sea level in downtown Sausalito and cresting at the top of the Marin Headlands near Hawk Hill, I was surprised the elevation gain was only 800 feet. It felt like much more. That’s barely a third of the way up Mt. Tam (elevation 2,571′)!
Here’s a map and elevation chart extracted from the gpx file created by the gps logging device I sometimes carry with me.