yep, its national. They have a Spring contest and a Fall contest. I beleive the Best of show for the whole country gets $500 gift certificate for Hobbytown.
I've participated in it, the turnout where I live is pretty small and its a light-laid back competition. Just be sure to have somebody whatching the models, A kid over here decided to play whith the best looking model there and brake it into pieces, then left like it didnt happen.
I felt really sorry for the poor guy, from then on we all watched...