The calculated distance (air line) between Sūsangerd and Khorramshahr is approximately 78 miles respectively 125 kilometers.
By car or train, the actual journey to Khorramshahr is certainly longer, as only the direct route (as the crow flies) between Sūsangerd and Khorramshahr has been calculated here.
Air line (approximately)
125 kilometers
67 nautical miles