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