| Rome to Octeville | 863.16 mi (1,389.13 km) |
| Rome to Oignies | 745.19 mi (1,199.26 km) |
| Rome to Oissel | 752.11 mi (1,210.40 km) |
| Rome to Olivet | 661.27 mi (1,064.21 km) |
| Rome to Ollioules | 348.64 mi (561.09 km) |
| Rome to Olonne-sur-Mer | 773.94 mi (1,245.54 km) |
| Rome to Oloron-Sainte-Marie | 671.65 mi (1,080.92 km) |
| Rome to Onet Village | 526.71 mi (847.65 km) |
| Rome to Onnaing | 723.74 mi (1,164.75 km) |
| Rome to Orange | 417.32 mi (671.60 km) |
| Rome to Orchies | 738.31 mi (1,188.20 km) |
| Rome to Orleans | 662.47 mi (1,066.14 km) |
| Rome to Orly | 680.36 mi (1,094.93 km) |
| Rome to Ormesson-sur-Marne | 677.21 mi (1,089.87 km) |
| Rome to Orsay | 685.51 mi (1,103.22 km) |
