| Hanko to Oria | 1,355.44 mi (2,181.38 km) |
| Hanko to Oristano | 1,510.81 mi (2,431.42 km) |
| Hanko to Orta Nova | 1,315.57 mi (2,117.20 km) |
| Hanko to Orte | 1,281.29 mi (2,062.04 km) |
| Hanko to Ortona | 1,261.43 mi (2,030.08 km) |
| Hanko to Orvieto | 1,268.40 mi (2,041.29 km) |
| Hanko to Orzinuovi | 1,132.64 mi (1,822.81 km) |
| Hanko to Osimo | 1,197.76 mi (1,927.61 km) |
| Hanko to Ospitaletto | 1,120.09 mi (1,802.61 km) |
| Hanko to Ostuni | 1,339.85 mi (2,156.29 km) |
| Hanko to Ottaviano | 1,361.39 mi (2,190.95 km) |
| Hanko to Ovada | 1,206.28 mi (1,941.32 km) |
| Hanko to Ozieri | 1,459.33 mi (2,348.56 km) |
| Hanko to Paceco | 1,577.67 mi (2,539.02 km) |
| Hanko to Pachino | 1,635.00 mi (2,631.29 km) |
