| Ronciglione to Montemor-o-Novo | 1,100.06 mi (1,770.38 km) |
| Ronciglione to Montemor-o-Velho | 1,093.00 mi (1,759.02 km) |
| Ronciglione to Montijo | 1,134.03 mi (1,825.04 km) |
| Ronciglione to Mortagua | 1,065.52 mi (1,714.79 km) |
| Ronciglione to Moura | 1,073.85 mi (1,728.19 km) |
| Ronciglione to Murtosa | 1,081.27 mi (1,740.13 km) |
| Ronciglione to Nazare | 1,123.04 mi (1,807.36 km) |
| Ronciglione to Nelas | 1,044.59 mi (1,681.10 km) |
| Ronciglione to Obidos | 1,132.52 mi (1,822.62 km) |
| Ronciglione to Odemira | 1,148.00 mi (1,847.53 km) |
| Ronciglione to Odivelas | 1,145.83 mi (1,844.04 km) |
| Ronciglione to Oeiras | 1,155.23 mi (1,859.17 km) |
| Ronciglione to Olhao | 1,123.90 mi (1,808.74 km) |
| Ronciglione to Oliveira de Azemeis | 1,071.60 mi (1,724.57 km) |
| Ronciglione to Oliveira de Frades | 1,058.52 mi (1,703.52 km) |
