The calculated distance (air line) between Sonārgaon and Lakshmīpur is approximately 51 miles respectively 81 kilometers.
By car or train, the actual journey to Lakshmīpur is certainly longer, as only the direct route (as the crow flies) between Sonārgaon and Lakshmīpur has been calculated here.
Air line (approximately)
81 kilometers
44 nautical miles