The calculated distance (air line) between Hořice and Jablonec nad Nisou is approximately 32 miles respectively 51 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 Hořice and Jablonec nad Nisou has been calculated here.
Air line (approximately)
51 kilometers
28 nautical miles