| Meriden to Mangualde | 3,304.16 mi (5,317.53 km) |
| Meriden to Marco de Canavezes | 3,269.64 mi (5,261.97 km) |
| Meriden to Marinha Grande | 3,271.41 mi (5,264.82 km) |
| Meriden to Massama | 3,283.05 mi (5,283.55 km) |
| Meriden to Matosinhos | 3,243.30 mi (5,219.59 km) |
| Meriden to Mealhada | 3,277.13 mi (5,274.03 km) |
| Meriden to Melgaco | 3,239.25 mi (5,213.07 km) |
| Meriden to Melres | 3,260.82 mi (5,247.79 km) |
| Meriden to Mira | 3,262.09 mi (5,249.82 km) |
| Meriden to Miranda do Corvo | 3,290.65 mi (5,295.79 km) |
| Meriden to Mirandela | 3,307.64 mi (5,323.14 km) |
| Meriden to Mogadouro | 3,333.93 mi (5,365.44 km) |
| Meriden to Moimenta da Beira | 3,300.86 mi (5,312.22 km) |
| Meriden to Moita | 3,300.41 mi (5,311.50 km) |
| Meriden to Moncao | 3,230.26 mi (5,198.60 km) |
