The calculated distance (air line) between Klášterec nad Ohří and Jablonec nad Nisou is approximately 90 miles respectively 145 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 Klášterec nad Ohří and Jablonec nad Nisou has been calculated here.
Air line (approximately)
145 kilometers
78 nautical miles