Hi Again,
I can help out here, but we are limited in supporting customizations.
The map view does have a script to calculate distance. You might be able to utilize that if you add another way to collect a persons location so you can display it
This is the file that has the functions to determine distance:
plugins/events-calendar-pro/src/Tribe/Geo_Loc.php
That might provide help to get you started, there is not much else we have to provide on this.
Let me know if you have any follow up questions.
Thanks