The calculated distance (air line) between Dowlatābād and Rāmhormoz is approximately 161 miles respectively 260 kilometers.
By car or train, the actual journey to Rāmhormoz is certainly longer, as only the direct route (as the crow flies) between Dowlatābād and Rāmhormoz has been calculated here.
Air line (approximately)
260 kilometers
140 nautical miles