The calculated distance (air line) between Hlučín and Jablonec nad Nisou is approximately 145 miles respectively 233 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 Hlučín and Jablonec nad Nisou has been calculated here.
Air line (approximately)
233 kilometers
126 nautical miles