The calculated distance (air line) between Liberec and Jablonec nad Nisou is approximately 6 miles respectively 9 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 Liberec and Jablonec nad Nisou has been calculated here.
Air line (approximately)
9 kilometers
5 nautical miles