The calculated distance (air line) between Uster / Ober-Uster and Montreux is approximately 107 miles respectively 172 kilometers.
By car or train, the actual journey to Montreux is certainly longer, as only the direct route (as the crow flies) between Uster / Ober-Uster and Montreux has been calculated here.
Air line (approximately)
172 kilometers
93 nautical miles