The calculated distance (air line) between Khrustalnyi and Slov`yanoserbsk is approximately 39 miles respectively 62 kilometers.
By car or train, the actual journey to Slov`yanoserbsk is certainly longer, as only the direct route (as the crow flies) between Khrustalnyi and Slov`yanoserbsk has been calculated here.
Air line (approximately)
62 kilometers
34 nautical miles