The calculated distance (air line) between Le Mont-sur-Lausanne and Zürich (Kreis 9) is approximately 104 miles respectively 168 kilometers.
By car or train, the actual journey to Zürich (Kreis 9) is certainly longer, as only the direct route (as the crow flies) between Le Mont-sur-Lausanne and Zürich (Kreis 9) has been calculated here.
Air line (approximately)
168 kilometers
90 nautical miles