Because my common-law wife and I live on the other side of the country from our families, we have been faced with this issue.
Our plan is to leave where we are (if we have time), and hunker down at a friend’s farm in the next state over if things get out of hand. Lots of land, established crops, and herd of cattle. In exchange, I’m teaching them martial arts (I was on the path of becoming a certified instructor before I went in, and subsequently had to move for her schooling).
That’s best case scenario. Worst case scenario is we hoof it to another friend’s property closer by, but without the amenities that would make life easier.
Hopefully, assuming things ever get back to normal and our loved ones survive, we will have a reunion. That said, we are prepared for the worst, and speak with our families every week in case it is ever the last time we speak with them.