| Orbetello to Marco de Canavezes | 998.72 mi (1,607.29 km) |
| Orbetello to Marinha Grande | 1,062.71 mi (1,710.26 km) |
| Orbetello to Massama | 1,101.56 mi (1,772.79 km) |
| Orbetello to Matosinhos | 1,026.76 mi (1,652.40 km) |
| Orbetello to Mealhada | 1,026.38 mi (1,651.80 km) |
| Orbetello to Melgaco | 993.87 mi (1,599.47 km) |
| Orbetello to Melres | 1,013.09 mi (1,630.42 km) |
| Orbetello to Mira | 1,039.97 mi (1,673.67 km) |
| Orbetello to Miranda do Corvo | 1,025.47 mi (1,650.34 km) |
| Orbetello to Mirandela | 945.47 mi (1,521.59 km) |
| Orbetello to Mogadouro | 923.67 mi (1,486.51 km) |
| Orbetello to Moimenta da Beira | 974.25 mi (1,567.91 km) |
| Orbetello to Moita | 1,089.34 mi (1,753.12 km) |
| Orbetello to Moncao | 1,005.11 mi (1,617.57 km) |
| Orbetello to Montalegre | 972.68 mi (1,565.37 km) |
