The calculated distance (air line) between Agartala and Chhāgalnāiya is approximately 58 miles respectively 93 kilometers.
By car or train, the actual journey to Chhāgalnāiya is certainly longer, as only the direct route (as the crow flies) between Agartala and Chhāgalnāiya has been calculated here.
Air line (approximately)
93 kilometers
50 nautical miles