The calculated distance (air line) between Kriens and Zürich (Kreis 12) is approximately 29 miles respectively 47 kilometers.
By car or train, the actual journey to Zürich (Kreis 12) is certainly longer, as only the direct route (as the crow flies) between Kriens and Zürich (Kreis 12) has been calculated here.
Air line (approximately)
47 kilometers
25 nautical miles