The calculated distance (air line) between Long Thành and Thủ Dầu Một is approximately 24 miles respectively 39 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 Long Thành and Thủ Dầu Một has been calculated here.
Air line (approximately)
39 kilometers
21 nautical miles