The calculated distance (air line) between Bystrzyca Kłodzka and Częstochowa is approximately 114 miles respectively 184 kilometers.
By car or train, the actual journey to Częstochowa is certainly longer, as only the direct route (as the crow flies) between Bystrzyca Kłodzka and Częstochowa has been calculated here.
Air line (approximately)
184 kilometers
99 nautical miles