| Velletri to Octeville | 885.16 mi (1,424.52 km) |
| Velletri to Oignies | 766.82 mi (1,234.09 km) |
| Velletri to Oissel | 774.11 mi (1,245.80 km) |
| Velletri to Olivet | 683.25 mi (1,099.58 km) |
| Velletri to Ollioules | 368.10 mi (592.41 km) |
| Velletri to Olonne-sur-Mer | 795.14 mi (1,279.65 km) |
| Velletri to Oloron-Sainte-Marie | 690.19 mi (1,110.76 km) |
| Velletri to Onet Village | 547.04 mi (880.38 km) |
| Velletri to Onnaing | 745.29 mi (1,199.42 km) |
| Velletri to Orange | 437.96 mi (704.83 km) |
| Velletri to Orchies | 759.90 mi (1,222.94 km) |
| Velletri to Orleans | 684.45 mi (1,101.52 km) |
| Velletri to Orly | 702.35 mi (1,130.32 km) |
| Velletri to Ormesson-sur-Marne | 699.19 mi (1,125.25 km) |
| Velletri to Orsay | 707.51 mi (1,138.63 km) |
