In first time, sorry my english.
I used this for show a external link with mark of position in google maps.
Inside the loop i created this for save the coordinates.
$agenda = get_field('agenda_map');
$coordinates = $agenda['coordinates'];
next the google maps URL with the variable $coordinates
<a href="https://www.google.es/maps?t=h&q=loc:<?php echo $coordinates; ?>&z=17" target="_blank"></a>
Z parameter is the zoom. I hope that can be helpful.
