| San Felice Circeo to Octeville | 917.45 mi (1,476.49 km) |
| San Felice Circeo to Oignies | 800.58 mi (1,288.41 km) |
| San Felice Circeo to Oissel | 807.02 mi (1,298.77 km) |
| San Felice Circeo to Olivet | 715.41 mi (1,151.34 km) |
| San Felice Circeo to Ollioules | 393.57 mi (633.38 km) |
| San Felice Circeo to Olonne-sur-Mer | 824.25 mi (1,326.49 km) |
| San Felice Circeo to Oloron-Sainte-Marie | 713.27 mi (1,147.89 km) |
| San Felice Circeo to Onet Village | 574.12 mi (923.96 km) |
| San Felice Circeo to Onnaing | 779.10 mi (1,253.85 km) |
| San Felice Circeo to Orange | 465.89 mi (749.77 km) |
| San Felice Circeo to Orchies | 793.69 mi (1,277.32 km) |
| San Felice Circeo to Orleans | 716.65 mi (1,153.34 km) |
| San Felice Circeo to Orly | 735.33 mi (1,183.39 km) |
| San Felice Circeo to Ormesson-sur-Marne | 732.25 mi (1,178.44 km) |
| San Felice Circeo to Orsay | 740.39 mi (1,191.55 km) |
