| Ostroda to Oberkirch | 625.70 mi (1,006.97 km) |
| Ostroda to Obernburg am Main | 533.38 mi (858.39 km) |
| Ostroda to Obernkirchen | 461.54 mi (742.77 km) |
| Ostroda to Oberschleissheim | 524.06 mi (843.40 km) |
| Ostroda to Oberstdorf | 607.04 mi (976.93 km) |
| Ostroda to Obertraubling | 468.93 mi (754.67 km) |
| Ostroda to Obertshausen | 536.28 mi (863.06 km) |
| Ostroda to Oberursel | 541.02 mi (870.69 km) |
| Ostroda to Ochsenfurt | 507.46 mi (816.69 km) |
| Ostroda to Ochsenhausen | 583.75 mi (939.45 km) |
| Ostroda to Ochtrup | 540.99 mi (870.64 km) |
| Ostroda to Odenthal | 571.63 mi (919.94 km) |
| Ostroda to Oelde | 509.90 mi (820.60 km) |
| Ostroda to Oelsnitz | 401.22 mi (645.71 km) |
| Ostroda to Oer-Erkenschwick | 550.57 mi (886.06 km) |
