[рони]

Konstant82,
<button id = "find-me" onclick="calculateDistance()">Дистанция</button><br/>

function success(position) {
    latitude   = position.coords.latitude;
    longitude  = position.coords.longitude;

    status.textContent = '';
    mapLink.href = `https://www.openstreetmap.org/#map=18/${latitude}/${longitude}`;
    mapLink.textContent = `Latitude: ${latitude} °, Longitude: ${longitude} °`;
*!*
    calculateDistance()
*/!*
  }