The Redwood region PCA has a breakfast run October 22, 2011 from Chevys at 128 Vintage Way Novato to the Union Hotel in Occidental starting at 9:00am and ending about 1:00pm. I expect they would travel areas not typical for a visitor. September 30-October 2, 2011 the is the Classic Sports Racing Group event at Infineion Raceway. Check http://www.infineonraceway.com/ticke...ritychallange/. October can be the best time of year for weather in the Bay Area, but summer has been cooler than typical. Rain is possible, but unlikely. Enjoy your trip.