Well, it looks like a pretty ride at least. We were out today and the wildflowers are already starting to come out. You'll probably see lots of mustard. It seems to be in full bloom and in abundance in the vineyards and on the hillsides.
I agree- once you get past Fairfax on the way up and back, at least you'll be out of most of the traffic until you come back through Santa Rosa.
Have a great ride- at the moment the weather is looking good. You are always up for a challenge so this will be another to tell us about later!
Looking forward to your ride report!