The calculated distance (air line) between Tân An and Thủ Dầu Một is approximately 35 miles respectively 56 kilometers.
By car or train, the actual journey to Thủ Dầu Một is certainly longer, as only the direct route (as the crow flies) between Tân An and Thủ Dầu Một has been calculated here.
Air line (approximately)
56 kilometers
30 nautical miles