The calculated distance (air line) between Rạch Giá and Svay Rieng is approximately 89 miles respectively 143 kilometers.
By car or train, the actual journey to Svay Rieng is certainly longer, as only the direct route (as the crow flies) between Rạch Giá and Svay Rieng has been calculated here.
Air line (approximately)
143 kilometers
77 nautical miles