Starting in Längenfeld or Umhausen you can visit the mountain villages of Gries (1584 m) and Niederthai (1543 m) in the two eastern side valleys of Ötztal. West of the Ötztal federal road, in close vicinity to Umhausen, you'll find secluded Köfels (1401 m). All three mountain villages can be reached on asphalt roads which are not much frequented. The approx. 60 km long loop tour comprises 1514 altitude meters.
Tips, hints and linksMore details about biking & cycling in Ötztal: https://www.oetztal.com/biken
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