| Nigran to Mangualde | 119.25 mi (191.91 km) |
| Nigran to Marco de Canavezes | 74.38 mi (119.70 km) |
| Nigran to Marinha Grande | 165.40 mi (266.18 km) |
| Nigran to Massama | 235.18 mi (378.49 km) |
| Nigran to Matosinhos | 66.46 mi (106.95 km) |
| Nigran to Mealhada | 122.90 mi (197.79 km) |
| Nigran to Melgaco | 27.67 mi (44.53 km) |
| Nigran to Melres | 77.19 mi (124.22 km) |
| Nigran to Mira | 118.11 mi (190.08 km) |
| Nigran to Miranda do Corvo | 143.21 mi (230.47 km) |
| Nigran to Mirandela | 95.14 mi (153.11 km) |
| Nigran to Mogadouro | 121.32 mi (195.25 km) |
| Nigran to Moimenta da Beira | 101.22 mi (162.90 km) |
| Nigran to Moita | 241.45 mi (388.57 km) |
| Nigran to Moncao | 17.35 mi (27.92 km) |
