| Ronciglione to Marco de Canavezes | 1,050.24 mi (1,690.19 km) |
| Ronciglione to Marinha Grande | 1,113.34 mi (1,791.75 km) |
| Ronciglione to Massama | 1,151.43 mi (1,853.04 km) |
| Ronciglione to Matosinhos | 1,078.31 mi (1,735.38 km) |
| Ronciglione to Mealhada | 1,077.41 mi (1,733.93 km) |
| Ronciglione to Melgaco | 1,045.81 mi (1,683.08 km) |
| Ronciglione to Melres | 1,064.56 mi (1,713.25 km) |
| Ronciglione to Mira | 1,091.08 mi (1,755.92 km) |
| Ronciglione to Miranda do Corvo | 1,076.28 mi (1,732.11 km) |
| Ronciglione to Mirandela | 997.08 mi (1,604.65 km) |
| Ronciglione to Mogadouro | 975.15 mi (1,569.36 km) |
| Ronciglione to Moimenta da Beira | 1,025.59 mi (1,650.53 km) |
| Ronciglione to Moita | 1,139.03 mi (1,833.10 km) |
| Ronciglione to Moncao | 1,057.05 mi (1,701.16 km) |
| Ronciglione to Montalegre | 1,024.49 mi (1,648.76 km) |
