Struggling to display the Strava heat map with leaflet

[Michael]

I am desperately trying to get the Strava heat map as an overlay with Leaflet but I cannot get the Strava map to display. 

Below is my code:

// initialize the map

var map = L.map('map', {

    center: [40.759, -73.952],

    zoom: 13

});

streets = L.tileLayer('https://api.tiles.mapbox.com/v4/mapbox.streets/{z}/{x}/{y}.png?access_token={accessToken}', {

    attribution: 'Map data &copy; <a href="http://openstreetmap.org">OpenStreetMap</a> contributors, <a href="http://creativecommons.org/licenses/by-sa/2.0/">CC-BY-SA</a>, Imagery &copy; <a href="http://mapbox.com">Mapbox</a>',

    accessToken: xxx,

    maxZoom: 17,

    minZoom: 9

}).addTo(map);

cycling_lanes = L.tileLayer('http://tile.waymarkedtrails.org/cycling/{z}/{x}/{y}.png', {

    attribution: 'Map data &copy; <a href="http://openstreetmap.org">OpenStreetMap</a> under <a href="http://www.openstreetmap.org/copyright">ODbL</a>, elevation data by Imagery &copy; <a href="http://cycling.waymarkedtrails.org/en/help/acknowledgements">SRTM/ASTER</a>',

    maxZoom: 17,

    minZoom: 9

}).addTo(map);

running_heat = L.tileLayer('http:globalheat.strava.com/tiles/running/color3/{z}/{x}/{y}.png', {

    maxZoom: 17,

    minZoom: 9

}).addTo(map);

[Michael]

Ok i solved my issue: path should be changed to http://globalheat.strava.com/tiles/running/color3/{z}/{x}/{y}.png

Can't believe i spent hours on two missing slashes...