| Avellino to Octeville | 996.68 mi (1,603.99 km) |
| Avellino to Oignies | 869.47 mi (1,399.27 km) |
| Avellino to Oissel | 883.39 mi (1,421.68 km) |
| Avellino to Olivet | 795.34 mi (1,279.98 km) |
| Avellino to Ollioules | 483.66 mi (778.37 km) |
| Avellino to Olonne-sur-Mer | 911.17 mi (1,466.38 km) |
| Avellino to Oloron-Sainte-Marie | 804.12 mi (1,294.10 km) |
| Avellino to Onet Village | 663.25 mi (1,067.40 km) |
| Avellino to Onnaing | 846.83 mi (1,362.83 km) |
| Avellino to Orange | 554.26 mi (891.99 km) |
| Avellino to Orchies | 861.97 mi (1,387.21 km) |
| Avellino to Orleans | 796.45 mi (1,281.76 km) |
| Avellino to Orly | 811.44 mi (1,305.89 km) |
| Avellino to Ormesson-sur-Marne | 807.94 mi (1,300.25 km) |
| Avellino to Orsay | 817.04 mi (1,314.90 km) |
