The calculated distance (air line) between Luzern and Zürich (Kreis 10) is approximately 26 miles respectively 42 kilometers.
By car or train, the actual journey to Zürich (Kreis 10) is certainly longer, as only the direct route (as the crow flies) between Luzern and Zürich (Kreis 10) has been calculated here.
Air line (approximately)
42 kilometers
23 nautical miles