Holy Thick Fog, Batman!
That pretty much sets the tone of my ride. I started up toward Auburn to ride some of the hills just West of town, but as I went up in elevation, the fog got thicker and thicker. By the time I got to where the hills are, there was about 20 feet of visibility, and me without lights (should have brought the other bike, that's where the lights are). Pretty scary, so I headed back. Still, ended up with 67 mi, 16.5 avg, and 2600 ft.