The calculated distance (air line) between Sanza Pombo and Mbanza Kongo is approximately 141 miles respectively 227 kilometers.
By car or train, the actual journey to Mbanza Kongo is certainly longer, as only the direct route (as the crow flies) between Sanza Pombo and Mbanza Kongo has been calculated here.
Air line (approximately)
227 kilometers
122 nautical miles