The calculated distance (air line) between Radeče and Zagorje ob Savi is approximately 10 miles respectively 16 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 Radeče and Zagorje ob Savi has been calculated here.
Air line (approximately)
16 kilometers
9 nautical miles