Before Trekhawk returns to her senses, hee hee....

There are 3 (or 4?) brevet series that I'm aware of in Northern California in 2007. We surely can fit a 200K in before you head back Down Under.

SF Randonneurs: Their 2007 Schedule isn't posted yet, but the 200K has traditionally been held in (mid?) January. gahhhh
http://www.sfrandonneurs.org/

Santa Rosa:Their 2007 schedule isn't posted yet, but last year's 200K was in early March.
http://home.pacbell.net/donnk/

Davis Bike Club: they didn't have a brevet series in early 2006 but they started it up again this fall, and will be putting on the full series again in 2007. Their 200K is scheduled for March 10, so perhaps they're combining forces with Santa Rosa?
http://www.davisbikeclub.org/ultra/2006/default.htm

Santa Cruz Randonneurs: The 200K is tentatively scheduled for Sat. March 17.
http://pages.prodigy.net/scrandonneurs/