The calculated distance (air line) between Tišnov and Jablonec nad Nisou is approximately 110 miles respectively 177 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 Tišnov and Jablonec nad Nisou has been calculated here.
Air line (approximately)
177 kilometers
96 nautical miles