The calculated distance (air line) between Zürich (Kreis 11) / Seebach and Montreux is approximately 103 miles respectively 166 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) / Seebach and Montreux has been calculated here.
Air line (approximately)
166 kilometers
90 nautical miles