The calculated distance (air line) between Gursahāiganj and Allāhganj is approximately 30 miles respectively 48 kilometers.
By car or train, the actual journey to Allāhganj is certainly longer, as only the direct route (as the crow flies) between Gursahāiganj and Allāhganj has been calculated here.
Air line (approximately)
48 kilometers
26 nautical miles