The calculated distance (air line) between Bílovec and Jablonec nad Nisou is approximately 142 miles respectively 229 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 Bílovec and Jablonec nad Nisou has been calculated here.
Air line (approximately)
229 kilometers
124 nautical miles