| Quattro Castella to Marco de Canavezes | 969.45 mi (1,560.19 km) |
| Quattro Castella to Marinha Grande | 1,045.84 mi (1,683.11 km) |
| Quattro Castella to Massama | 1,092.96 mi (1,758.94 km) |
| Quattro Castella to Matosinhos | 996.27 mi (1,603.34 km) |
| Quattro Castella to Mealhada | 1,004.59 mi (1,616.74 km) |
| Quattro Castella to Melgaco | 954.54 mi (1,536.18 km) |
| Quattro Castella to Melres | 984.47 mi (1,584.35 km) |
| Quattro Castella to Mira | 1,016.95 mi (1,636.63 km) |
| Quattro Castella to Miranda do Corvo | 1,006.85 mi (1,620.36 km) |
| Quattro Castella to Mirandela | 915.11 mi (1,472.73 km) |
| Quattro Castella to Mogadouro | 896.08 mi (1,442.10 km) |
| Quattro Castella to Moimenta da Beira | 948.39 mi (1,526.29 km) |
| Quattro Castella to Moita | 1,082.64 mi (1,742.35 km) |
| Quattro Castella to Moncao | 965.87 mi (1,554.42 km) |
| Quattro Castella to Montalegre | 937.35 mi (1,508.52 km) |
