| Ferentino to Montemor-o-Novo | 1,149.50 mi (1,849.93 km) |
| Ferentino to Montemor-o-Velho | 1,146.69 mi (1,845.41 km) |
| Ferentino to Montijo | 1,184.02 mi (1,905.50 km) |
| Ferentino to Mortagua | 1,119.68 mi (1,801.95 km) |
| Ferentino to Moura | 1,121.23 mi (1,804.45 km) |
| Ferentino to Murtosa | 1,136.33 mi (1,828.75 km) |
| Ferentino to Nazare | 1,175.49 mi (1,891.77 km) |
| Ferentino to Nelas | 1,098.79 mi (1,768.34 km) |
| Ferentino to Obidos | 1,184.42 mi (1,906.13 km) |
| Ferentino to Odemira | 1,194.85 mi (1,922.92 km) |
| Ferentino to Odivelas | 1,196.29 mi (1,925.24 km) |
| Ferentino to Oeiras | 1,205.50 mi (1,940.07 km) |
| Ferentino to Olhao | 1,168.46 mi (1,880.46 km) |
| Ferentino to Oliveira de Azemeis | 1,126.86 mi (1,813.51 km) |
| Ferentino to Oliveira de Frades | 1,113.37 mi (1,791.80 km) |
