| Twin Rivers to Mangualde | 3,419.82 mi (5,503.66 km) |
| Twin Rivers to Marco de Canavezes | 3,385.75 mi (5,448.84 km) |
| Twin Rivers to Marinha Grande | 3,385.77 mi (5,448.87 km) |
| Twin Rivers to Massama | 3,396.18 mi (5,465.63 km) |
| Twin Rivers to Matosinhos | 3,359.24 mi (5,406.18 km) |
| Twin Rivers to Mealhada | 3,392.33 mi (5,459.43 km) |
| Twin Rivers to Melgaco | 3,356.24 mi (5,401.35 km) |
| Twin Rivers to Melres | 3,376.74 mi (5,434.34 km) |
| Twin Rivers to Mira | 3,377.24 mi (5,435.15 km) |
| Twin Rivers to Miranda do Corvo | 3,405.60 mi (5,480.78 km) |
| Twin Rivers to Mirandela | 3,424.34 mi (5,510.95 km) |
| Twin Rivers to Mogadouro | 3,450.63 mi (5,553.25 km) |
| Twin Rivers to Moimenta da Beira | 3,416.94 mi (5,499.03 km) |
| Twin Rivers to Moita | 3,413.54 mi (5,493.57 km) |
| Twin Rivers to Moncao | 3,347.14 mi (5,386.71 km) |
