The calculated distance (air line) between Częstochowa and Nowy Sącz is approximately 107 miles respectively 172 kilometers.
By car or train, the actual journey to Nowy Sącz is certainly longer, as only the direct route (as the crow flies) between Częstochowa and Nowy Sącz has been calculated here.
Air line (approximately)
172 kilometers
93 nautical miles