Yeah, Northbay is the general area north of the Golden Gate Bridge. can extend all the way up... as far as one wants to be included I guess... and then as far east as Sacramento and west to the ocean.
I live about 1 hour north of the bridge, just north of Healdsburg.
Susanville area is way out in the back country, I have yet to get out there.
as far as my ride this weekend!!! I am afraid to say, you guys in the snow country might have me lynched if I bragg too much.

I got up, and hopped on the bike at 8 am. Saturday it was just above freezing but warmed up to 60's. I was the only one to ride with short sleeves. (after it got above 55*) .. everyone else was all bundled up... kinda funny.
Both days I left at 8am and rode till it was past dark..... logged in over 500 miles ( we stopped to enjoy the views)....what a weekend,
the Ultra ran flawlessly, weather was perfectly clear, traffic was mild since we only went on side roads. The wife went with me Saturdaym but stayed home Sunday. there were only 3 to 6 bikes in our group.
I found a road similar to the Tail of the Dragon over there on the east coast!!! between Winters and Napa. It is over 11 miles, but it sure gives the feeling of what that road might be like.
Life is grand when ya got a bike...