The calculated distance (air line) between Stadt Winterthur (Kreis 1) and Montreux is approximately 112 miles respectively 181 kilometers.
By car or train, the actual journey to Montreux is certainly longer, as only the direct route (as the crow flies) between Stadt Winterthur (Kreis 1) and Montreux has been calculated here.
Air line (approximately)
181 kilometers
98 nautical miles