The calculated distance (air line) between Montigny-lès-Cormeilles and Amiens is approximately 64 miles respectively 102 kilometers.
By car or train, the actual journey to Amiens is certainly longer, as only the direct route (as the crow flies) between Montigny-lès-Cormeilles and Amiens has been calculated here.
Air line (approximately)
102 kilometers
55 nautical miles