The calculated distance (air line) between Zürich (Kreis 11) and Montreux is approximately 102 miles respectively 165 kilometers.
By car or train, the actual journey to Montreux is certainly longer, as only the direct route (as the crow flies) between Zürich (Kreis 11) and Montreux has been calculated here.
Air line (approximately)
165 kilometers
89 nautical miles