The calculated distance (air line) between Železniki and Zagorje ob Savi is approximately 40 miles respectively 64 kilometers.
By car or train, the actual journey to Zagorje ob Savi is certainly longer, as only the direct route (as the crow flies) between Železniki and Zagorje ob Savi has been calculated here.
Air line (approximately)
64 kilometers
35 nautical miles