Okay, let's get a good thread with links for all the regional race sites started.

I'm in the San Francisco area. We have five different series in our district -- Bay Area, Sacramento, Central Coast (Monterey), Surf City (Santa Cruz), and East Bay. Lots of racing! In addition, there are some fun non-sanctioned races.

Here's the link for Northern California (with links to all the various series):

http://www.ncnca.org/cyclocross/2006/index.php