TourWerk is a German language route sharing website. Users of the site can upload or download running, hiking, biking routes and view them on Google Maps.
The site uses Google Maps to show the location of all shared routes. The routes are shown on the map using map markers that reflect the type of route uploaded (a bike marker for a biking route, a hiker marker for walking routes etc.).
If you select a route from the map you will then be taken to that route's own dedicated page. Here the route is shown on a Google Map, alongside a description of the route and an elevation chart.