| Karhula to Oestrich-Winkel | 1,033.96 mi (1,664.00 km) |
| Karhula to Offenburg | 1,120.83 mi (1,803.81 km) |
| Karhula to Oftersheim | 1,052.83 mi (1,694.36 km) |
| Karhula to Ohrdruf | 915.26 mi (1,472.97 km) |
| Karhula to Ohringen | 1,038.54 mi (1,671.37 km) |
| Karhula to Olbernhau | 859.69 mi (1,383.54 km) |
| Karhula to Olching | 1,052.36 mi (1,693.62 km) |
| Karhula to Oldenburg | 866.97 mi (1,395.26 km) |
| Karhula to Oldenburg in Holstein | 732.64 mi (1,179.08 km) |
| Karhula to Olfen | 961.52 mi (1,547.42 km) |
| Karhula to Olpe | 984.44 mi (1,584.30 km) |
| Karhula to Olsberg | 948.59 mi (1,526.61 km) |
| Karhula to Oranienburg | 744.53 mi (1,198.21 km) |
| Karhula to Ortenberg | 985.83 mi (1,586.55 km) |
| Karhula to Oschatz | 828.60 mi (1,333.51 km) |
