| Oviedo to Mangualde | 214.32 mi (344.91 km) |
| Oviedo to Marco de Canavezes | 191.05 mi (307.46 km) |
| Oviedo to Marinha Grande | 296.11 mi (476.54 km) |
| Oviedo to Massama | 364.73 mi (586.97 km) |
| Oviedo to Matosinhos | 209.56 mi (337.25 km) |
| Oviedo to Mealhada | 245.45 mi (395.02 km) |
| Oviedo to Melgaco | 149.93 mi (241.29 km) |
| Oviedo to Melres | 205.41 mi (330.57 km) |
| Oviedo to Mira | 250.87 mi (403.74 km) |
| Oviedo to Miranda do Corvo | 259.19 mi (417.13 km) |
| Oviedo to Mirandela | 146.37 mi (235.56 km) |
| Oviedo to Mogadouro | 146.93 mi (236.47 km) |
| Oviedo to Moimenta da Beira | 187.74 mi (302.14 km) |
| Oviedo to Moita | 364.18 mi (586.09 km) |
| Oviedo to Moncao | 160.60 mi (258.46 km) |
