Map below shows long route from walk 16. Walkers follow the route at their risk.

<?php

error_reporting(E_ALL);
ini_set('display_errors', 1);
$gpx="images/gpxtracks/walk_10a_richmond_park.gpx";
RLicense::GoogleMapKey("AIzaSyDk2Sg2P7tSkLxoaJGWaIp19_4ik173jCY");
$map=new RLeafletGpxMap(); // standard software to read json feed and decode file
$map->linecolour='#782327'; // optionally set the route's line colour
$map->displayPath($gpx);
?>

Download the GPX route (save as)