| Halikko to Obernburg am Main | 910.02 mi (1,464.54 km) |
| Halikko to Obernkirchen | 772.55 mi (1,243.30 km) |
| Halikko to Oberschleissheim | 955.81 mi (1,538.23 km) |
| Halikko to Oberstdorf | 1,033.53 mi (1,663.30 km) |
| Halikko to Obertraubling | 899.44 mi (1,447.51 km) |
| Halikko to Obertshausen | 903.99 mi (1,454.83 km) |
| Halikko to Oberursel | 902.22 mi (1,451.98 km) |
| Halikko to Ochsenfurt | 900.35 mi (1,448.98 km) |
| Halikko to Ochsenhausen | 999.06 mi (1,607.84 km) |
| Halikko to Ochtrup | 827.49 mi (1,331.71 km) |
| Halikko to Odenthal | 892.41 mi (1,436.19 km) |
| Halikko to Oelde | 821.46 mi (1,322.00 km) |
| Halikko to Oelsnitz | 809.30 mi (1,302.44 km) |
| Halikko to Oer-Erkenschwick | 855.75 mi (1,377.20 km) |
| Halikko to Oerlinghausen | 800.64 mi (1,288.51 km) |
