| Waterville to Mangualde | 3,085.16 mi (4,965.09 km) |
| Waterville to Marco de Canavezes | 3,049.26 mi (4,907.32 km) |
| Waterville to Marinha Grande | 3,056.48 mi (4,918.93 km) |
| Waterville to Massama | 3,071.82 mi (4,943.62 km) |
| Waterville to Matosinhos | 3,023.52 mi (4,865.88 km) |
| Waterville to Mealhada | 3,059.60 mi (4,923.95 km) |
| Waterville to Melgaco | 3,016.12 mi (4,853.98 km) |
| Waterville to Melres | 3,041.08 mi (4,894.15 km) |
| Waterville to Mira | 3,044.72 mi (4,900.00 km) |
| Waterville to Miranda do Corvo | 3,073.89 mi (4,946.95 km) |
| Waterville to Mirandela | 3,085.33 mi (4,965.36 km) |
| Waterville to Mogadouro | 3,111.59 mi (5,007.62 km) |
| Waterville to Moimenta da Beira | 3,080.54 mi (4,957.65 km) |
| Waterville to Moita | 3,089.17 mi (4,971.53 km) |
| Waterville to Moncao | 3,007.47 mi (4,840.06 km) |
