| Sweetwater to Mangualde | 4,203.34 mi (6,764.62 km) |
| Sweetwater to Marco de Canavezes | 4,176.41 mi (6,721.29 km) |
| Sweetwater to Marinha Grande | 4,152.80 mi (6,683.29 km) |
| Sweetwater to Massama | 4,147.00 mi (6,673.96 km) |
| Sweetwater to Matosinhos | 4,148.21 mi (6,675.89 km) |
| Sweetwater to Mealhada | 4,170.37 mi (6,711.57 km) |
| Sweetwater to Melgaco | 4,159.95 mi (6,694.80 km) |
| Sweetwater to Melres | 4,164.93 mi (6,702.81 km) |
| Sweetwater to Mira | 4,155.10 mi (6,686.98 km) |
| Sweetwater to Miranda do Corvo | 4,179.86 mi (6,726.83 km) |
| Sweetwater to Mirandela | 4,222.32 mi (6,795.17 km) |
| Sweetwater to Mogadouro | 4,247.90 mi (6,836.34 km) |
| Sweetwater to Moimenta da Beira | 4,206.35 mi (6,769.47 km) |
| Sweetwater to Moita | 4,163.80 mi (6,700.99 km) |
| Sweetwater to Moncao | 4,149.62 mi (6,678.17 km) |
