The calculated distance (air line) between Petřvald and Jablonec nad Nisou is approximately 155 miles respectively 249 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 Petřvald and Jablonec nad Nisou has been calculated here.
Air line (approximately)
249 kilometers
135 nautical miles