The calculated distance (air line) between Chêne-Bougeries and Montreux is approximately 38 miles respectively 61 kilometers.
By car or train, the actual journey to Montreux is certainly longer, as only the direct route (as the crow flies) between Chêne-Bougeries and Montreux has been calculated here.
Air line (approximately)
61 kilometers
33 nautical miles