The calculated distance (air line) between Benátky nad Jizerou and Prostějov is approximately 117 miles respectively 188 kilometers.
By car or train, the actual journey to Prostějov is certainly longer, as only the direct route (as the crow flies) between Benátky nad Jizerou and Prostějov has been calculated here.
Air line (approximately)
188 kilometers
101 nautical miles