| Cowes to Orbetello | 824.55 mi (1,326.99 km) |
| Cowes to Oria | 1,151.60 mi (1,853.32 km) |
| Cowes to Oristano | 888.88 mi (1,430.52 km) |
| Cowes to Orta Nova | 1,039.75 mi (1,673.31 km) |
| Cowes to Orte | 864.02 mi (1,390.50 km) |
| Cowes to Ortona | 942.28 mi (1,516.45 km) |
| Cowes to Orvieto | 841.45 mi (1,354.18 km) |
| Cowes to Orzinuovi | 636.09 mi (1,023.69 km) |
| Cowes to Osimo | 855.26 mi (1,376.41 km) |
| Cowes to Ospitaletto | 634.59 mi (1,021.27 km) |
| Cowes to Ostuni | 1,138.51 mi (1,832.25 km) |
| Cowes to Ottaviano | 1,019.02 mi (1,639.95 km) |
| Cowes to Ovada | 625.71 mi (1,006.99 km) |
| Cowes to Ozieri | 859.43 mi (1,383.12 km) |
| Cowes to Paceco | 1,112.89 mi (1,791.03 km) |
