The calculated distance (air line) between Montreux and Zürich (Kreis 12) is approximately 103 miles respectively 166 kilometers.
By car or train, the actual journey to Zürich (Kreis 12) is certainly longer, as only the direct route (as the crow flies) between Montreux and Zürich (Kreis 12) has been calculated here.
Air line (approximately)
166 kilometers
90 nautical miles