Set Map Widget to Display Listings Based on Location Instead of Category or Tag

Here’s my default locations page: https://cornholecentral.com/location/
It consists of three sections based on 3 CPTs: clubs, tournaments and places.

I want to create prepackaged versions of this page for various cities, states and areas. Here’s an example of what one would look like, for SF Bay Area:
https://cornholecentral.com/sf-bay-area

To make this page I added a “tag” San Francisco Bay Area to all of the clubs, events and places that I want to appear, but I don’t want to have to tag every one of those things for every one of these pages I’ll build, and I can’t do it by region/city “slug” because I don’t have all of the areas I want to do these for set up as regions. That’ll work for states, but not metropolitan areas, for examples.

Instead, I want the three maps, and the three grids of clubs/events/places, to display records in or near that boundary. Satisfying what somebody would put int eh Location Switcher, for example, e.g. “In Texas” or “Near Minneapolis”. Is it possible to do that?