The calculated distance (air line) between Khmelnytskyi and Stara Syniava is approximately 31 miles respectively 50 kilometers.
By car or train, the actual journey to Stara Syniava is certainly longer, as only the direct route (as the crow flies) between Khmelnytskyi and Stara Syniava has been calculated here.
Air line (approximately)
50 kilometers
27 nautical miles