| Karhula to Obernburg am Main | 1,011.93 mi (1,628.55 km) |
| Karhula to Obernkirchen | 883.38 mi (1,421.66 km) |
| Karhula to Oberschleissheim | 1,043.59 mi (1,679.50 km) |
| Karhula to Oberstdorf | 1,123.79 mi (1,808.57 km) |
| Karhula to Obertraubling | 987.06 mi (1,588.52 km) |
| Karhula to Obertshausen | 1,007.65 mi (1,621.65 km) |
| Karhula to Oberursel | 1,007.13 mi (1,620.82 km) |
| Karhula to Ochsenfurt | 998.48 mi (1,606.89 km) |
| Karhula to Ochsenhausen | 1,092.51 mi (1,758.22 km) |
| Karhula to Ochtrup | 942.94 mi (1,517.51 km) |
| Karhula to Odenthal | 1,004.12 mi (1,615.98 km) |
| Karhula to Oelde | 933.28 mi (1,501.97 km) |
| Karhula to Oelsnitz | 902.15 mi (1,451.88 km) |
| Karhula to Oer-Erkenschwick | 969.16 mi (1,559.71 km) |
| Karhula to Oerlinghausen | 911.58 mi (1,467.04 km) |
