| Didymoteicho to Marco de Canavezes | 1,787.39 mi (2,876.52 km) |
| Didymoteicho to Marinha Grande | 1,850.57 mi (2,978.20 km) |
| Didymoteicho to Massama | 1,887.05 mi (3,036.91 km) |
| Didymoteicho to Matosinhos | 1,815.36 mi (2,921.53 km) |
| Didymoteicho to Mealhada | 1,814.96 mi (2,920.90 km) |
| Didymoteicho to Melgaco | 1,780.93 mi (2,866.13 km) |
| Didymoteicho to Melres | 1,801.80 mi (2,899.72 km) |
| Didymoteicho to Mira | 1,828.63 mi (2,942.90 km) |
| Didymoteicho to Miranda do Corvo | 1,813.70 mi (2,918.87 km) |
| Didymoteicho to Mirandela | 1,734.00 mi (2,790.60 km) |
| Didymoteicho to Mogadouro | 1,712.38 mi (2,755.81 km) |
| Didymoteicho to Moimenta da Beira | 1,763.02 mi (2,837.31 km) |
| Didymoteicho to Moita | 1,874.18 mi (3,016.21 km) |
| Didymoteicho to Moncao | 1,792.23 mi (2,884.31 km) |
| Didymoteicho to Montalegre | 1,760.57 mi (2,833.36 km) |
