The calculated distance (air line) between Phan Thiết and Gia Nghĩa is approximately 79 miles respectively 128 kilometers.
By car or train, the actual journey to Gia Nghĩa is certainly longer, as only the direct route (as the crow flies) between Phan Thiết and Gia Nghĩa has been calculated here.
Air line (approximately)
128 kilometers
69 nautical miles