The calculated distance (air line) between Chełm Śląski and Częstochowa is approximately 48 miles respectively 77 kilometers.
By car or train, the actual journey to Częstochowa is certainly longer, as only the direct route (as the crow flies) between Chełm Śląski and Częstochowa has been calculated here.
Air line (approximately)
77 kilometers
41 nautical miles