| Marina to Orbetello | 6,220.57 mi (10,011.04 km) |
| Marina to Oria | 6,516.48 mi (10,487.26 km) |
| Marina to Oristano | 6,279.13 mi (10,105.28 km) |
| Marina to Orta Nova | 6,414.44 mi (10,323.04 km) |
| Marina to Orte | 6,254.15 mi (10,065.09 km) |
| Marina to Ortona | 6,318.52 mi (10,168.68 km) |
| Marina to Orvieto | 6,231.50 mi (10,028.63 km) |
| Marina to Orzinuovi | 6,018.10 mi (9,685.20 km) |
| Marina to Osimo | 6,227.67 mi (10,022.47 km) |
| Marina to Ospitaletto | 6,013.57 mi (9,677.91 km) |
| Marina to Ostuni | 6,501.37 mi (10,462.94 km) |
| Marina to Ottaviano | 6,406.95 mi (10,310.98 km) |
| Marina to Ovada | 6,021.90 mi (9,691.32 km) |
| Marina to Ozieri | 6,255.14 mi (10,066.67 km) |
| Marina to Paceco | 6,512.21 mi (10,480.38 km) |
