The calculated distance (air line) between Libeň and Jablonec nad Nisou is approximately 52 miles respectively 84 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 Libeň and Jablonec nad Nisou has been calculated here.
Air line (approximately)
84 kilometers
46 nautical miles