The calculated distance (air line) between Česká Skalice and Jablonec nad Nisou is approximately 45 miles respectively 72 kilometers.
By car or train, the actual journey to Jablonec nad Nisou is certainly longer, as only the direct route (as the crow flies) between Česká Skalice and Jablonec nad Nisou has been calculated here.
Air line (approximately)
72 kilometers
39 nautical miles