Awesome pics Bryan. Makes me jealous of your adventures. At least I have a GT stick, but no place to drive in anger.
A quick google search found this in the PNW area...
http://www.pnwhpde.com/schedule.htm
I am sure you could find a group to run with. I know that we here at the chicago audi club love noobies to inject the track needle into and our events are open to non Audis no problem, you just need to join the club. I would recommend a group that includes instruction, as you'll learn a heck of a lot more when compared to open lapping/test and tune style days. Once you get a few events under your lap, open events are great too.
It is a great hobby!