The calculated distance (air line) between Sonārgaon and Sarishābāri is approximately 91 miles respectively 146 kilometers.
By car or train, the actual journey to Sarishābāri is certainly longer, as only the direct route (as the crow flies) between Sonārgaon and Sarishābāri has been calculated here.
Air line (approximately)
146 kilometers
79 nautical miles