The calculated distance (air line) between Jablonec nad Nisou and Prostějov is approximately 122 miles respectively 196 kilometers.
By car or train, the actual journey to Prostějov is certainly longer, as only the direct route (as the crow flies) between Jablonec nad Nisou and Prostějov has been calculated here.
Air line (approximately)
196 kilometers
106 nautical miles