Start in the center of St. Ulrich am Pillersee and drive westward. Turn right at the restaurant "Dorfcafé Birnbacher" towards the hamlet Schartental. Follow the road untill a small parking and turn right again. From there you bike permanent upward passing the "Lindtalalm" befor you reach the alpine hut "Winterstelleralm". You have to taste the delicious tyrolean bread / cheese / ham...!
Take the same way back.
Alternative: Follow the trail upward. Between the hill above Winterstelleralm and "Gerstbergalm" there's a foot path (push you bike!). At Gerstbergalm follow the trail 263 "Kalksteinalmen" towards Kirchdorf i.T.; retourn to St. Ulrich a.P. via St. Johann i.T. and Fieberbrunn (tour 18 "Kalksteinrunde").