Download all your Runtastic activities - Go to "My Activities" and than run this code in you browser console

runtastic.js

var links = [];
$('.download a:contains(TCX)').each ( function () {
	links.push($(this).attr('href'))
} );


links.forEach(function(link) {
	// console.log(link);
	var newFrame = document.createElement('iframe');
	document.body.appendChild(newFrame);
	newFrame.style = 'width: 1px; height: 1px;';
	newFrame.src = link;
});