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