| South Venice to Orbetello | 5,155.70 mi (8,297.29 km) |
| South Venice to Oria | 5,513.51 mi (8,873.13 km) |
| South Venice to Oristano | 5,096.24 mi (8,201.60 km) |
| South Venice to Orta Nova | 5,398.11 mi (8,687.42 km) |
| South Venice to Orte | 5,210.15 mi (8,384.92 km) |
| South Venice to Ortona | 5,307.04 mi (8,540.86 km) |
| South Venice to Orvieto | 5,190.19 mi (8,352.81 km) |
| South Venice to Orzinuovi | 5,020.01 mi (8,078.93 km) |
| South Venice to Osimo | 5,232.52 mi (8,420.93 km) |
| South Venice to Ospitaletto | 5,022.45 mi (8,082.86 km) |
| South Venice to Ostuni | 5,503.86 mi (8,857.61 km) |
| South Venice to Ottaviano | 5,354.32 mi (8,616.94 km) |
| South Venice to Ovada | 4,980.07 mi (8,014.64 km) |
| South Venice to Ozieri | 5,098.82 mi (8,205.76 km) |
| South Venice to Paceco | 5,344.09 mi (8,600.49 km) |
