The calculated distance (air line) between Světlá nad Sázavou and Znojmo is approximately 63 miles respectively 102 kilometers.
By car or train, the actual journey to Znojmo is certainly longer, as only the direct route (as the crow flies) between Světlá nad Sázavou and Znojmo has been calculated here.
Air line (approximately)
102 kilometers
55 nautical miles