The calculated distance (air line) between Aizawl and Kailāshahar is approximately 61 miles respectively 99 kilometers.
By car or train, the actual journey to Kailāshahar is certainly longer, as only the direct route (as the crow flies) between Aizawl and Kailāshahar has been calculated here.
Air line (approximately)
99 kilometers
53 nautical miles