USAIR - Shawano, WI
See attachment, via their
Facebook page. Plenty of rules to keep people safe, but they are doing it. And I don't see why not. The place is spacious and there's no problem getting some track action in without being close to other people.
I'll be setting up a day late May or early June if any Ninjettes in the midwest driving distance are interested.
https://vimeo.com/358960834