| Hamina to Oria | 1,445.24 mi (2,325.89 km) |
| Hamina to Oristano | 1,634.40 mi (2,630.31 km) |
| Hamina to Orta Nova | 1,415.23 mi (2,277.59 km) |
| Hamina to Orte | 1,396.40 mi (2,247.28 km) |
| Hamina to Ortona | 1,368.34 mi (2,202.13 km) |
| Hamina to Orvieto | 1,384.99 mi (2,228.93 km) |
| Hamina to Orzinuovi | 1,261.97 mi (2,030.94 km) |
| Hamina to Osimo | 1,310.45 mi (2,108.97 km) |
| Hamina to Ospitaletto | 1,249.31 mi (2,010.58 km) |
| Hamina to Ostuni | 1,430.16 mi (2,301.62 km) |
| Hamina to Ottaviano | 1,465.63 mi (2,358.70 km) |
| Hamina to Ovada | 1,337.86 mi (2,153.07 km) |
| Hamina to Ozieri | 1,582.72 mi (2,547.15 km) |
| Hamina to Paceco | 1,685.44 mi (2,712.45 km) |
| Hamina to Pachino | 1,731.56 mi (2,786.68 km) |
