The calculated distance (air line) between Svay Rieng and Trà Vinh is approximately 87 miles respectively 140 kilometers.
By car or train, the actual journey to Trà Vinh is certainly longer, as only the direct route (as the crow flies) between Svay Rieng and Trà Vinh has been calculated here.
Air line (approximately)
140 kilometers
76 nautical miles