The calculated distance (air line) between Rotkreuz and Zürich (Kreis 12) is approximately 19 miles respectively 31 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 Rotkreuz and Zürich (Kreis 12) has been calculated here.
Air line (approximately)
31 kilometers
17 nautical miles