Map

<?php
$args['posts_per_page'] = 10;
$args['orderby'] = 'meta_value';
$args['meta_key'] = 'classement';
$args['order'] = 'ASC';
$args['suppress_filters'] = 'true';

$wp_query = new WP_Query($args);

if ( $wp_query->have_posts() ) :

    $latsearch = doubleval($_POST['inputlatsearch']);
    $lngsearch = doubleval($_POST['inputlngsearch']);

    $location = get_field('adresse');
    if(!empty($location['coordinates'])) :
        list($lat, $lng) = explode(',', $location['coordinates']);
    endif;

    $lat = doubleval($lat);
    $lng = doubleval($lng);

    while ( $wp_query->have_posts() ) : $wp_query->the_post();

        // I WOULD LIKE TO COMBINE THIS WITH THE QUERY
        $distance = !empty($_POST['inputlatsearch']) ? (6371 * acos( cos( deg2rad($latsearch) ) * cos( deg2rad( $lat ) ) * cos( deg2rad( $lng ) - deg2rad($lngsearch) ) + sin( deg2rad($latsearch) ) * sin( deg2rad( $lat ) ) ) ) : 0;

        if($distance <= $_POST['kmautour']) {
            echo get_the_title();
        }

    endwhile;
else:
echo '<p>Pas de résultats</p>';
endif;
?>