| Sredets to Marco de Canavezes | 1,810.35 mi (2,913.48 km) |
| Sredets to Marinha Grande | 1,877.10 mi (3,020.90 km) |
| Sredets to Massama | 1,916.00 mi (3,083.51 km) |
| Sredets to Matosinhos | 1,838.04 mi (2,958.04 km) |
| Sredets to Mealhada | 1,840.04 mi (2,961.26 km) |
| Sredets to Melgaco | 1,801.12 mi (2,898.63 km) |
| Sredets to Melres | 1,824.98 mi (2,937.01 km) |
| Sredets to Mira | 1,853.41 mi (2,982.77 km) |
| Sredets to Miranda do Corvo | 1,839.64 mi (2,960.61 km) |
| Sredets to Mirandela | 1,756.56 mi (2,826.92 km) |
| Sredets to Mogadouro | 1,735.63 mi (2,793.22 km) |
| Sredets to Moimenta da Beira | 1,786.85 mi (2,875.66 km) |
| Sredets to Moita | 1,903.61 mi (3,063.56 km) |
| Sredets to Moncao | 1,812.45 mi (2,916.86 km) |
| Sredets to Montalegre | 1,781.84 mi (2,867.59 km) |
