The calculated distance (air line) between Rāmhormoz and Khorramshahr is approximately 102 miles respectively 164 kilometers.
By car or train, the actual journey to Khorramshahr is certainly longer, as only the direct route (as the crow flies) between Rāmhormoz and Khorramshahr has been calculated here.
Air line (approximately)
164 kilometers
89 nautical miles