The calculated distance (air line) between Mattenbach (Kreis 7) and Lugano is approximately 103 miles respectively 165 kilometers.
By car or train, the actual journey to Lugano is certainly longer, as only the direct route (as the crow flies) between Mattenbach (Kreis 7) and Lugano has been calculated here.
Air line (approximately)
165 kilometers
89 nautical miles