You won’t be able to output all of them unless they are in your loop. I’m not sure what your initial $discipline; call is as well as the one within your loop. You’re not doing anything with it there.
You’ll need something like this:
<?php
$output_map[$the_ID]['map'] = '<div class="marker" data-lat="'.$location['lat'].'" data-lng="'.$location['lng'].'"></div>';
$disciplines = get_field("form_disciplines");
// $discipline; not sure what this is?
if( $disciplines ):
foreach ($disciplines as $discipline) {
echo '<p>' . $discipline . '</p>';
}
endif;
?>
Your map marker output doesn’t include any of the code in your loop so you can put it before or after your foreach loop depending on where you need it.
