| Porvoo to Marco de Canavezes | 1,947.45 mi (3,134.11 km) |
| Porvoo to Marinha Grande | 2,052.17 mi (3,302.65 km) |
| Porvoo to Massama | 2,119.24 mi (3,410.59 km) |
| Porvoo to Matosinhos | 1,964.15 mi (3,160.99 km) |
| Porvoo to Mealhada | 2,001.65 mi (3,221.34 km) |
| Porvoo to Melgaco | 1,898.92 mi (3,056.01 km) |
| Porvoo to Melres | 1,961.57 mi (3,156.84 km) |
| Porvoo to Mira | 2,007.36 mi (3,230.54 km) |
| Porvoo to Miranda do Corvo | 2,014.23 mi (3,241.59 km) |
| Porvoo to Mirandela | 1,901.27 mi (3,059.81 km) |
| Porvoo to Mogadouro | 1,895.95 mi (3,051.23 km) |
| Porvoo to Moimenta da Beira | 1,942.75 mi (3,126.56 km) |
| Porvoo to Moita | 2,116.70 mi (3,406.50 km) |
| Porvoo to Moncao | 1,907.86 mi (3,070.40 km) |
| Porvoo to Montalegre | 1,900.76 mi (3,058.97 km) |
