with the usual caveat that my database may not necessarily be complete, and that additions and corrections are always welcome, the answer to this question is confused by the fact that I have some venues that are almost certainly in the United States, but there are several places with this name and I'm not certain which specific place is being referred to. those venues are: Carson, Chestnut Hill, Greenville, Hillsdale, Huntington, Johnson City, Lincoln, Lynchburg, Madison, Pontiac, Richmond, Rosemont, Springs, Uniondale, Williamsburg.
excepting those places, the states where I do not currently have a sub-4 are:
Colorado - mentioned in the thread but I don't have a result.
I have made no attempt to discrimnate between indoor and outdoor.