The calculated distance (air line) between Nārāyanganj and Lakshmīpur is approximately 51 miles respectively 82 kilometers.
By car or train, the actual journey to Lakshmīpur is certainly longer, as only the direct route (as the crow flies) between Nārāyanganj and Lakshmīpur has been calculated here.
Air line (approximately)
82 kilometers
44 nautical miles