Again this year, 7 hours of racing taking over downtown Pleasanton. the 5-6:30 races are the District Championships. http://www.fastandfuriouspleasanton.com/
And, this year we have Handles Gastropub a half a block from the course, 30 craft beers on tap. (I'm not recommending the food).
Pre-regis for racers ends Sat at midnight, assuming your desired group is still open.