[EricH]

Originally Posted by Coffeeism

I've heard that the minimum was 30 due to the cost of holding the regional. I've never seen a regional with less than 30 spots. Even in pretty cramped venues. Like WPI and Riverbank state park.

Israel Pilot, and possibly Brazil, had fewer, I think. The Israel Pilot went full-fledged the next year, while the Brazil Regional no longer exists due various factors (though I wouldn't be surprised if lack of teams was one of them).

I've heard of a regional with < 30 teams, but I'm fairly certain they had more spots.