| Karhula to Oria | 1,438.78 mi (2,315.49 km) |
| Karhula to Oristano | 1,626.13 mi (2,617.00 km) |
| Karhula to Orta Nova | 1,408.22 mi (2,266.30 km) |
| Karhula to Orte | 1,388.55 mi (2,234.65 km) |
| Karhula to Ortona | 1,360.92 mi (2,190.19 km) |
| Karhula to Orvieto | 1,377.06 mi (2,216.17 km) |
| Karhula to Orzinuovi | 1,253.36 mi (2,017.09 km) |
| Karhula to Osimo | 1,302.72 mi (2,096.52 km) |
| Karhula to Ospitaletto | 1,240.71 mi (1,996.73 km) |
| Karhula to Ostuni | 1,423.67 mi (2,291.17 km) |
| Karhula to Ottaviano | 1,458.38 mi (2,347.03 km) |
| Karhula to Ovada | 1,329.15 mi (2,139.06 km) |
| Karhula to Ozieri | 1,574.46 mi (2,533.84 km) |
| Karhula to Paceco | 1,678.03 mi (2,700.52 km) |
| Karhula to Pachino | 1,724.78 mi (2,775.76 km) |
