The calculated distance (air line) between Lwówek Śląski and Częstochowa is approximately 156 miles respectively 250 kilometers.
By car or train, the actual journey to Częstochowa is certainly longer, as only the direct route (as the crow flies) between Lwówek Śląski and Częstochowa has been calculated here.
Air line (approximately)
250 kilometers
135 nautical miles