The calculated distance (air line) between Nārāyanganj and Sarishābāri is approximately 89 miles respectively 144 kilometers.
By car or train, the actual journey to Sarishābāri is certainly longer, as only the direct route (as the crow flies) between Nārāyanganj and Sarishābāri has been calculated here.
Air line (approximately)
144 kilometers
78 nautical miles