The calculated distance (air line) between Karviná and Jablonec nad Nisou is approximately 160 miles respectively 258 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 Karviná and Jablonec nad Nisou has been calculated here.
Air line (approximately)
258 kilometers
139 nautical miles