The calculated distance (air line) between Montreux and Zürich (Kreis 9) / Altstetten is approximately 99 miles respectively 160 kilometers.
By car or train, the actual journey to Zürich (Kreis 9) / Altstetten is certainly longer, as only the direct route (as the crow flies) between Montreux and Zürich (Kreis 9) / Altstetten has been calculated here.
Air line (approximately)
160 kilometers
86 nautical miles