The calculated distance (air line) between Kudowa-Zdrój and Częstochowa is approximately 129 miles respectively 207 kilometers.
By car or train, the actual journey to Częstochowa is certainly longer, as only the direct route (as the crow flies) between Kudowa-Zdrój and Częstochowa has been calculated here.
Air line (approximately)
207 kilometers
112 nautical miles