Profile: Akhil

Problem:
How to hide the map distance filter unit dropdown that displays km and mi and also how to change the option text

Solution:
To hide that select box, please try to add following line of CSS code to your view's "Search and Pagination" section's CSS box and try to resolve your issue.:

#toolset-maps-distance { display: none !important; }

Currently there is no native feature available to change the mi option value but as a workaround you can use the following javascript code and add it to JS box and try to resolve your issue.

jQuery(document).ready(function($){
  $('#toolset-maps-distance option[value=mi]').text('Miles')
 });

Relevant Documentation: