This pleasant segment leads from idyllic village of Oberradein all the way to Truden – from 1,500 meters to 1,100 meters above sea-level. At the start, you proceed downhill by way of Unterradein until you come to the famed "Ice Holes" of Kaltenbrunn; because of the cool air that streams out of the openings in the ground, it's pleasant here even in the summer. Kaltenbrunn offers refreshment options and connection to public transportation. From here, the route goes slightly uphill and then levels off as you continue to Truden.
Derived from the technical difficulty and the stamina requirements.