The calculated distance (air line) between Světlá nad Sázavou and Prostějov is approximately 78 miles respectively 125 kilometers.
By car or train, the actual journey to Prostějov is certainly longer, as only the direct route (as the crow flies) between Světlá nad Sázavou and Prostějov has been calculated here.
Air line (approximately)
125 kilometers
67 nautical miles