| North Liberty to Mangualde | 4,172.93 mi (6,715.67 km) |
| North Liberty to Marco de Canavezes | 4,134.82 mi (6,654.35 km) |
| North Liberty to Marinha Grande | 4,150.85 mi (6,680.15 km) |
| North Liberty to Massama | 4,171.18 mi (6,712.86 km) |
| North Liberty to Matosinhos | 4,110.27 mi (6,614.84 km) |
| North Liberty to Mealhada | 4,149.95 mi (6,678.70 km) |
| North Liberty to Melgaco | 4,096.69 mi (6,592.99 km) |
| North Liberty to Melres | 4,127.81 mi (6,643.06 km) |
| North Liberty to Mira | 4,135.41 mi (6,655.30 km) |
| North Liberty to Miranda do Corvo | 4,165.39 mi (6,703.55 km) |
| North Liberty to Mirandela | 4,167.04 mi (6,706.20 km) |
| North Liberty to Mogadouro | 4,193.08 mi (6,748.11 km) |
| North Liberty to Moimenta da Beira | 4,166.00 mi (6,704.54 km) |
| North Liberty to Moita | 4,188.42 mi (6,740.62 km) |
| North Liberty to Moncao | 4,088.78 mi (6,580.25 km) |
