| Smithville to Mangualde | 4,389.87 mi (7,064.82 km) |
| Smithville to Marco de Canavezes | 4,352.17 mi (7,004.14 km) |
| Smithville to Marinha Grande | 4,366.34 mi (7,026.94 km) |
| Smithville to Massama | 4,385.36 mi (7,057.55 km) |
| Smithville to Matosinhos | 4,327.38 mi (6,964.24 km) |
| Smithville to Mealhada | 4,366.35 mi (7,026.96 km) |
| Smithville to Melgaco | 4,314.89 mi (6,944.15 km) |
| Smithville to Melres | 4,344.93 mi (6,992.49 km) |
| Smithville to Mira | 4,351.73 mi (7,003.43 km) |
| Smithville to Miranda do Corvo | 4,381.55 mi (7,051.42 km) |
| Smithville to Mirandela | 4,385.10 mi (7,057.13 km) |
| Smithville to Mogadouro | 4,411.19 mi (7,099.12 km) |
| Smithville to Moimenta da Beira | 4,383.39 mi (7,054.39 km) |
| Smithville to Moita | 4,402.64 mi (7,085.37 km) |
| Smithville to Moncao | 4,306.86 mi (6,931.21 km) |
