| Monte San Giovanni Campano to Octeville | 914.52 mi (1,471.77 km) |
| Monte San Giovanni Campano to Oignies | 790.46 mi (1,272.12 km) |
| Monte San Giovanni Campano to Oissel | 801.84 mi (1,290.44 km) |
| Monte San Giovanni Campano to Olivet | 713.03 mi (1,147.51 km) |
| Monte San Giovanni Campano to Ollioules | 404.85 mi (651.54 km) |
| Monte San Giovanni Campano to Olonne-sur-Mer | 829.20 mi (1,334.47 km) |
| Monte San Giovanni Campano to Oloron-Sainte-Marie | 727.58 mi (1,170.92 km) |
| Monte San Giovanni Campano to Onet Village | 582.81 mi (937.94 km) |
| Monte San Giovanni Campano to Onnaing | 768.29 mi (1,236.44 km) |
| Monte San Giovanni Campano to Orange | 473.26 mi (761.63 km) |
| Monte San Giovanni Campano to Orchies | 783.21 mi (1,260.45 km) |
| Monte San Giovanni Campano to Orleans | 714.15 mi (1,149.32 km) |
| Monte San Giovanni Campano to Orly | 729.93 mi (1,174.71 km) |
| Monte San Giovanni Campano to Ormesson-sur-Marne | 726.54 mi (1,169.26 km) |
| Monte San Giovanni Campano to Orsay | 735.40 mi (1,183.51 km) |
