The calculated distance (air line) between Ho Chi Minh City and Hà Tiên is approximately 149 miles respectively 239 kilometers.
By car or train, the actual journey to Hà Tiên is certainly longer, as only the direct route (as the crow flies) between Ho Chi Minh City and Hà Tiên has been calculated here.
Air line (approximately)
239 kilometers
129 nautical miles