| Preili to Marco de Canavezes | 1,870.50 mi (3,010.28 km) |
| Preili to Marinha Grande | 1,970.75 mi (3,171.61 km) |
| Preili to Massama | 2,033.92 mi (3,273.27 km) |
| Preili to Matosinhos | 1,890.47 mi (3,042.42 km) |
| Preili to Mealhada | 1,921.30 mi (3,092.04 km) |
| Preili to Melgaco | 1,829.03 mi (2,943.54 km) |
| Preili to Melres | 1,885.34 mi (3,034.17 km) |
| Preili to Mira | 1,929.02 mi (3,104.45 km) |
| Preili to Miranda do Corvo | 1,931.41 mi (3,108.31 km) |
| Preili to Mirandela | 1,820.52 mi (2,929.85 km) |
| Preili to Mogadouro | 1,811.34 mi (2,915.07 km) |
| Preili to Moimenta da Beira | 1,861.25 mi (2,995.39 km) |
| Preili to Moita | 2,029.05 mi (3,265.43 km) |
| Preili to Moncao | 1,838.94 mi (2,959.48 km) |
| Preili to Montalegre | 1,825.99 mi (2,938.65 km) |
