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