| Oviedo to Montalegre | 145.19 mi (233.65 km) |
| Oviedo to Montemor-o-Novo | 348.09 mi (560.20 km) |
| Oviedo to Montemor-o-Velho | 264.68 mi (425.96 km) |
| Oviedo to Montijo | 360.17 mi (579.64 km) |
| Oviedo to Mortagua | 236.57 mi (380.72 km) |
| Oviedo to Moura | 370.75 mi (596.67 km) |
| Oviedo to Murtosa | 231.06 mi (371.86 km) |
| Oviedo to Nazare | 308.65 mi (496.73 km) |
| Oviedo to Nelas | 221.82 mi (356.99 km) |
| Oviedo to Obidos | 325.46 mi (523.79 km) |
| Oviedo to Odemira | 425.12 mi (684.16 km) |
| Oviedo to Odivelas | 360.28 mi (579.81 km) |
| Oviedo to Oeiras | 370.27 mi (595.89 km) |
| Oviedo to Olhao | 450.10 mi (724.36 km) |
| Oviedo to Oliveira de Azemeis | 220.19 mi (354.36 km) |
