| Oviedo to Nasaud | 1,484.71 mi (2,389.42 km) |
| Oviedo to Navodari | 1,705.82 mi (2,745.25 km) |
| Oviedo to Negresti-Oas | 1,439.23 mi (2,316.22 km) |
| Oviedo to Nehoiu | 1,583.63 mi (2,548.61 km) |
| Oviedo to Ocna Mures | 1,460.64 mi (2,350.67 km) |
| Oviedo to Odobesti | 1,617.13 mi (2,602.51 km) |
| Oviedo to Odorheiu Secuiesc | 1,529.58 mi (2,461.62 km) |
| Oviedo to Oltenita | 1,612.11 mi (2,594.44 km) |
| Oviedo to Onesti | 1,599.74 mi (2,574.53 km) |
| Oviedo to Oradea | 1,367.99 mi (2,201.57 km) |
| Oviedo to Orastie | 1,431.09 mi (2,303.11 km) |
| Oviedo to Oravita | 1,362.00 mi (2,191.93 km) |
| Oviedo to Orsova | 1,398.74 mi (2,251.05 km) |
| Oviedo to Otelu Rosu | 1,391.79 mi (2,239.88 km) |
| Oviedo to Otopeni | 1,579.43 mi (2,541.85 km) |
