The calculated distance (air line) between Khorramshahr and Rāmshīr is approximately 79 miles respectively 127 kilometers.
By car or train, the actual journey to Rāmshīr is certainly longer, as only the direct route (as the crow flies) between Khorramshahr and Rāmshīr has been calculated here.
Air line (approximately)
127 kilometers
69 nautical miles