The calculated distance (air line) between Polanica-Zdrój and Częstochowa is approximately 118 miles respectively 189 kilometers.
By car or train, the actual journey to Częstochowa is certainly longer, as only the direct route (as the crow flies) between Polanica-Zdrój and Częstochowa has been calculated here.
Air line (approximately)
189 kilometers
102 nautical miles