A guidebook to four hut-to-hut treks in Austria's Zillertal Alps: the 80km Zillertal Rucksack Route (also known as the Berliner Hohenweg), the 54km Peter Habeler Runde, the 45km Olperer Runde and the 61km Zillertal South Tirol Tour. Suitable for experienced trekkers with good fitness, the routes showcase the region's stunning mountain scenery. The Zillertal Rucksack Route is presented in 9 stages, the Peter Habeler Runde in 7, the Olperer Runde in 6 and the Zillertal South Tirol Tour in 7. Also included are optional ascents of neighbouring peaks, including the region's highest, 3510m Hochfeiler, some of which may require specialist equipment, mountaineering skills and experience of glacier crossing. Clear route description illustrated with 1:50,000 mapping GPX files available for download Elevation profiles for each trek Comprehensive hut directory Detailed summary of each day's challenges and any potential hazards