The calculated distance (air line) between L'Entregu/El Entrego and Oviedo is approximately 12 miles respectively 19 kilometers.
By car or train, the actual journey to Oviedo is certainly longer, as only the direct route (as the crow flies) between L'Entregu/El Entrego and Oviedo has been calculated here.
Air line (approximately)
19 kilometers
10 nautical miles