| Petrila to Mangualde | 1,599.49 mi (2,574.13 km) |
| Petrila to Marco de Canavezes | 1,603.44 mi (2,580.48 km) |
| Petrila to Marinha Grande | 1,679.70 mi (2,703.22 km) |
| Petrila to Massama | 1,725.46 mi (2,776.85 km) |
| Petrila to Matosinhos | 1,630.09 mi (2,623.38 km) |
| Petrila to Mealhada | 1,638.77 mi (2,637.35 km) |
| Petrila to Melgaco | 1,586.80 mi (2,553.71 km) |
| Petrila to Melres | 1,618.49 mi (2,604.70 km) |
| Petrila to Mira | 1,651.16 mi (2,657.28 km) |
| Petrila to Miranda do Corvo | 1,640.84 mi (2,640.68 km) |
| Petrila to Mirandela | 1,549.06 mi (2,492.97 km) |
| Petrila to Mogadouro | 1,530.24 mi (2,462.68 km) |
| Petrila to Moimenta da Beira | 1,582.58 mi (2,546.92 km) |
| Petrila to Moita | 1,714.63 mi (2,759.43 km) |
| Petrila to Moncao | 1,598.11 mi (2,571.91 km) |
