The calculated distance (air line) between Kazimierza Wielka and Częstochowa is approximately 70 miles respectively 113 kilometers.
By car or train, the actual journey to Częstochowa is certainly longer, as only the direct route (as the crow flies) between Kazimierza Wielka and Częstochowa has been calculated here.
Air line (approximately)
113 kilometers
61 nautical miles