The calculated distance (air line) between Svitavy and Jablonec nad Nisou is approximately 88 miles respectively 142 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 Svitavy and Jablonec nad Nisou has been calculated here.
Air line (approximately)
142 kilometers
77 nautical miles