| Martinsville to Mangualde | 3,788.86 mi (6,097.58 km) |
| Martinsville to Marco de Canavezes | 3,755.70 mi (6,044.21 km) |
| Martinsville to Marinha Grande | 3,752.28 mi (6,038.71 km) |
| Martinsville to Massama | 3,760.20 mi (6,051.45 km) |
| Martinsville to Matosinhos | 3,728.88 mi (6,001.05 km) |
| Martinsville to Mealhada | 3,760.50 mi (6,051.94 km) |
| Martinsville to Melgaco | 3,727.87 mi (5,999.43 km) |
| Martinsville to Melres | 3,746.32 mi (6,029.11 km) |
| Martinsville to Mira | 3,745.34 mi (6,027.54 km) |
| Martinsville to Miranda do Corvo | 3,773.25 mi (6,072.46 km) |
| Martinsville to Mirandela | 3,795.39 mi (6,108.10 km) |
| Martinsville to Mogadouro | 3,821.65 mi (6,150.35 km) |
| Martinsville to Moimenta da Beira | 3,786.80 mi (6,094.26 km) |
| Martinsville to Moita | 3,777.53 mi (6,079.34 km) |
| Martinsville to Moncao | 3,718.59 mi (5,984.49 km) |
