| Osuna to Mangualde | 273.30 mi (439.83 km) |
| Osuna to Marco de Canavezes | 317.98 mi (511.74 km) |
| Osuna to Marinha Grande | 270.53 mi (435.37 km) |
| Osuna to Massama | 250.47 mi (403.10 km) |
| Osuna to Matosinhos | 334.04 mi (537.58 km) |
| Osuna to Mealhada | 282.62 mi (454.83 km) |
| Osuna to Melgaco | 377.03 mi (606.77 km) |
| Osuna to Melres | 318.40 mi (512.42 km) |
| Osuna to Mira | 295.11 mi (474.94 km) |
| Osuna to Miranda do Corvo | 263.89 mi (424.68 km) |
| Osuna to Mirandela | 314.10 mi (505.50 km) |
| Osuna to Mogadouro | 296.17 mi (476.63 km) |
| Osuna to Moimenta da Beira | 291.80 mi (469.60 km) |
| Osuna to Moita | 233.12 mi (375.16 km) |
| Osuna to Moncao | 379.60 mi (610.91 km) |
