The calculated distance (air line) between Oberwinterthur (Kreis 2) / Talacker and Montreux is approximately 114 miles respectively 184 kilometers.
By car or train, the actual journey to Montreux is certainly longer, as only the direct route (as the crow flies) between Oberwinterthur (Kreis 2) / Talacker and Montreux has been calculated here.
Air line (approximately)
184 kilometers
99 nautical miles