| Leek to Mangualde | 904.73 mi (1,456.03 km) |
| Leek to Marco de Canavezes | 871.98 mi (1,403.31 km) |
| Leek to Marinha Grande | 978.74 mi (1,575.13 km) |
| Leek to Massama | 1,049.70 mi (1,689.34 km) |
| Leek to Matosinhos | 880.69 mi (1,417.34 km) |
| Leek to Mealhada | 929.43 mi (1,495.77 km) |
| Leek to Melgaco | 812.44 mi (1,307.49 km) |
| Leek to Melres | 883.54 mi (1,421.91 km) |
| Leek to Mira | 930.52 mi (1,497.53 km) |
| Leek to Miranda do Corvo | 946.45 mi (1,523.16 km) |
| Leek to Mirandela | 838.08 mi (1,348.77 km) |
| Leek to Mogadouro | 842.37 mi (1,355.66 km) |
| Leek to Moimenta da Beira | 877.67 mi (1,412.48 km) |
| Leek to Moita | 1,052.33 mi (1,693.57 km) |
| Leek to Moncao | 818.82 mi (1,317.77 km) |
