The calculated distance (air line) between Monthey and Zürich (Kreis 7) is approximately 109 miles respectively 175 kilometers.
By car or train, the actual journey to Zürich (Kreis 7) is certainly longer, as only the direct route (as the crow flies) between Monthey and Zürich (Kreis 7) has been calculated here.
Air line (approximately)
175 kilometers
95 nautical miles