Looks like you are a mt biker primarily? I'm much more familiar with the road scene around here, but we do have a dirt contingent to our team that I could put you in touch with.

I think the best source of info about local mt bike rides and races is here: http://www.bbtc.org/home/index.php
another person who orgainizes local mt bike races is www.buduracing.com
you might also check out Oregon www.obra.org

for road go to www.wsbaracing.com (and there is a link to the cyclocross site and calender from here on the events page)