The calculated distance (air line) between Nārāyanganj and Maulavi Bāzār is approximately 100 miles respectively 161 kilometers.
By car or train, the actual journey to Maulavi Bāzār is certainly longer, as only the direct route (as the crow flies) between Nārāyanganj and Maulavi Bāzār has been calculated here.
Air line (approximately)
161 kilometers
87 nautical miles