The calculated distance (air line) between Zest’aponi and Ts’khinvali is approximately 48 miles respectively 78 kilometers.
By car or train, the actual journey to Ts’khinvali is certainly longer, as only the direct route (as the crow flies) between Zest’aponi and Ts’khinvali has been calculated here.
Air line (approximately)
78 kilometers
42 nautical miles