| Whitewater to Mangualde | 4,007.68 mi (6,449.74 km) |
| Whitewater to Marco de Canavezes | 3,969.61 mi (6,388.47 km) |
| Whitewater to Marinha Grande | 3,985.55 mi (6,414.12 km) |
| Whitewater to Massama | 4,005.89 mi (6,446.85 km) |
| Whitewater to Matosinhos | 3,945.04 mi (6,348.93 km) |
| Whitewater to Mealhada | 3,984.67 mi (6,412.71 km) |
| Whitewater to Melgaco | 3,931.59 mi (6,327.29 km) |
| Whitewater to Melres | 3,962.58 mi (6,377.15 km) |
| Whitewater to Mira | 3,970.13 mi (6,389.30 km) |
| Whitewater to Miranda do Corvo | 4,000.10 mi (6,437.53 km) |
| Whitewater to Mirandela | 4,001.92 mi (6,440.47 km) |
| Whitewater to Mogadouro | 4,027.97 mi (6,482.39 km) |
| Whitewater to Moimenta da Beira | 4,000.80 mi (6,438.67 km) |
| Whitewater to Moita | 4,023.13 mi (6,474.61 km) |
| Whitewater to Moncao | 3,923.66 mi (6,314.52 km) |
