The calculated distance (air line) between Slaný and Jablonec nad Nisou is approximately 59 miles respectively 94 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 Slaný and Jablonec nad Nisou has been calculated here.
Air line (approximately)
94 kilometers
51 nautical miles