The calculated distance (air line) between Davos and Zürich (Kreis 7) is approximately 71 miles respectively 114 kilometers.
By car or train, the actual journey to Zürich (Kreis 7) is certainly longer, as only the direct route (as the crow flies) between Davos and Zürich (Kreis 7) has been calculated here.
Air line (approximately)
114 kilometers
62 nautical miles