The calculated distance (air line) between Damāvand and Shahrak-e Emām Ḩasan is approximately 44 miles respectively 70 kilometers.
By car or train, the actual journey to Shahrak-e Emām Ḩasan is certainly longer, as only the direct route (as the crow flies) between Damāvand and Shahrak-e Emām Ḩasan has been calculated here.
Air line (approximately)
70 kilometers
38 nautical miles