| Shelbyville to Mangualde | 4,149.52 mi (6,678.01 km) |
| Shelbyville to Marco de Canavezes | 4,115.37 mi (6,623.06 km) |
| Shelbyville to Marinha Grande | 4,115.39 mi (6,623.08 km) |
| Shelbyville to Massama | 4,125.36 mi (6,639.12 km) |
| Shelbyville to Matosinhos | 4,088.90 mi (6,580.45 km) |
| Shelbyville to Mealhada | 4,122.06 mi (6,633.81 km) |
| Shelbyville to Melgaco | 4,085.53 mi (6,575.02 km) |
| Shelbyville to Melres | 4,106.40 mi (6,608.62 km) |
| Shelbyville to Mira | 4,106.97 mi (6,609.52 km) |
| Shelbyville to Miranda do Corvo | 4,135.31 mi (6,655.14 km) |
| Shelbyville to Mirandela | 4,153.77 mi (6,684.85 km) |
| Shelbyville to Mogadouro | 4,180.06 mi (6,727.15 km) |
| Shelbyville to Moimenta da Beira | 4,146.57 mi (6,673.26 km) |
| Shelbyville to Moita | 4,142.71 mi (6,667.05 km) |
| Shelbyville to Moncao | 4,076.49 mi (6,560.47 km) |
