The calculated distance (air line) between Zürich (Kreis 2) / Wollishofen and Montreux is approximately 99 miles respectively 159 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 2) / Wollishofen and Montreux has been calculated here.
Air line (approximately)
159 kilometers
86 nautical miles