The calculated distance (air line) between Phan Thiết and Trà Vinh is approximately 137 miles respectively 221 kilometers.
By car or train, the actual journey to Trà Vinh is certainly longer, as only the direct route (as the crow flies) between Phan Thiết and Trà Vinh has been calculated here.
Air line (approximately)
221 kilometers
119 nautical miles