The calculated distance (air line) between Arad and Râmnicu Vâlcea is approximately 165 miles respectively 266 kilometers.
By car or train, the actual journey to Râmnicu Vâlcea is certainly longer, as only the direct route (as the crow flies) between Arad and Râmnicu Vâlcea has been calculated here.
Air line (approximately)
266 kilometers
143 nautical miles