| Rapid City to Mangualde | 4,585.88 mi (7,380.26 km) |
| Rapid City to Marco de Canavezes | 4,545.08 mi (7,314.59 km) |
| Rapid City to Marinha Grande | 4,574.29 mi (7,361.61 km) |
| Rapid City to Massama | 4,602.78 mi (7,407.46 km) |
| Rapid City to Matosinhos | 4,522.59 mi (7,278.41 km) |
| Rapid City to Mealhada | 4,567.09 mi (7,350.02 km) |
| Rapid City to Melgaco | 4,500.53 mi (7,242.91 km) |
| Rapid City to Melres | 4,539.85 mi (7,306.18 km) |
| Rapid City to Mira | 4,553.26 mi (7,327.77 km) |
| Rapid City to Miranda do Corvo | 4,584.10 mi (7,377.39 km) |
| Rapid City to Mirandela | 4,571.43 mi (7,357.00 km) |
| Rapid City to Mogadouro | 4,596.79 mi (7,397.82 km) |
| Rapid City to Moimenta da Beira | 4,575.70 mi (7,363.88 km) |
| Rapid City to Moita | 4,619.66 mi (7,434.62 km) |
| Rapid City to Moncao | 4,493.74 mi (7,231.98 km) |
