The distances are carefully measured with the path measuring tool in Google Earth. Where the roads and trails are hidden by trees, I used GPS recorded tracks as guide for the measurements.
The dots on the map mark main crossroads. In order to keep the map clean and simple, I used straight lines to mark the trails. Winding routes with many bends appear to be much shorter on this map than in reality.
Here is a table with the same routes as on the map above. The table contains a few more extra details: