| Knottingley to Mangualde | 954.50 mi (1,536.12 km) |
| Knottingley to Marco de Canavezes | 922.25 mi (1,484.21 km) |
| Knottingley to Marinha Grande | 1,029.15 mi (1,656.25 km) |
| Knottingley to Massama | 1,100.07 mi (1,770.40 km) |
| Knottingley to Matosinhos | 931.36 mi (1,498.88 km) |
| Knottingley to Mealhada | 979.67 mi (1,576.63 km) |
| Knottingley to Melgaco | 863.10 mi (1,389.03 km) |
| Knottingley to Melres | 933.96 mi (1,503.06 km) |
| Knottingley to Mira | 980.99 mi (1,578.75 km) |
| Knottingley to Miranda do Corvo | 996.52 mi (1,603.75 km) |
| Knottingley to Mirandela | 887.63 mi (1,428.50 km) |
| Knottingley to Mogadouro | 891.40 mi (1,434.57 km) |
| Knottingley to Moimenta da Beira | 927.43 mi (1,492.56 km) |
| Knottingley to Moita | 1,102.48 mi (1,774.27 km) |
| Knottingley to Moncao | 869.62 mi (1,399.52 km) |
