| Holly Hill to Mangualde | 4,106.74 mi (6,609.15 km) |
| Holly Hill to Marco de Canavezes | 4,077.54 mi (6,562.16 km) |
| Holly Hill to Marinha Grande | 4,060.82 mi (6,535.26 km) |
| Holly Hill to Massama | 4,059.72 mi (6,533.49 km) |
| Holly Hill to Matosinhos | 4,049.70 mi (6,517.36 km) |
| Holly Hill to Mealhada | 4,075.23 mi (6,558.46 km) |
| Holly Hill to Melgaco | 4,057.06 mi (6,529.21 km) |
| Holly Hill to Melres | 4,066.74 mi (6,544.79 km) |
| Holly Hill to Mira | 4,059.94 mi (6,533.83 km) |
| Holly Hill to Miranda do Corvo | 4,085.89 mi (6,575.60 km) |
| Holly Hill to Mirandela | 4,121.47 mi (6,632.86 km) |
| Holly Hill to Mogadouro | 4,147.39 mi (6,674.57 km) |
| Holly Hill to Moimenta da Beira | 4,108.00 mi (6,611.19 km) |
| Holly Hill to Moita | 4,076.78 mi (6,560.94 km) |
| Holly Hill to Moncao | 4,047.05 mi (6,513.10 km) |
