The calculated distance (air line) between Belonia and Chhāgalnāiya is approximately 16 miles respectively 26 kilometers.
By car or train, the actual journey to Chhāgalnāiya is certainly longer, as only the direct route (as the crow flies) between Belonia and Chhāgalnāiya has been calculated here.
Air line (approximately)
26 kilometers
14 nautical miles