The calculated distance (air line) between Chhātak and Nārāyanganj is approximately 123 miles respectively 198 kilometers.
By car or train, the actual journey to Nārāyanganj is certainly longer, as only the direct route (as the crow flies) between Chhātak and Nārāyanganj has been calculated here.
Air line (approximately)
198 kilometers
107 nautical miles