| Oliveira de Frades to Orbetello | 1,007.29 mi (1,621.08 km) |
| Oliveira de Frades to Oria | 1,349.36 mi (2,171.58 km) |
| Oliveira de Frades to Oristano | 884.24 mi (1,423.04 km) |
| Oliveira de Frades to Orta Nova | 1,242.33 mi (1,999.34 km) |
| Oliveira de Frades to Orte | 1,067.12 mi (1,717.36 km) |
| Oliveira de Frades to Ortona | 1,170.01 mi (1,882.94 km) |
| Oliveira de Frades to Orvieto | 1,053.12 mi (1,694.83 km) |
| Oliveira de Frades to Orzinuovi | 967.59 mi (1,557.19 km) |
| Oliveira de Frades to Osimo | 1,123.76 mi (1,808.51 km) |
| Oliveira de Frades to Ospitaletto | 976.67 mi (1,571.79 km) |
| Oliveira de Frades to Ostuni | 1,344.31 mi (2,163.46 km) |
| Oliveira de Frades to Ottaviano | 1,182.24 mi (1,902.64 km) |
| Oliveira de Frades to Ovada | 894.89 mi (1,440.19 km) |
| Oliveira de Frades to Ozieri | 899.54 mi (1,447.67 km) |
| Oliveira de Frades to Paceco | 1,121.02 mi (1,804.10 km) |
