The calculated distance (air line) between Mayāng Imphāl and Kolasib is approximately 81 miles respectively 130 kilometers.
By car or train, the actual journey to Kolasib is certainly longer, as only the direct route (as the crow flies) between Mayāng Imphāl and Kolasib has been calculated here.
Air line (approximately)
130 kilometers
70 nautical miles