| Ortahisar to Oberkirch | 1,494.57 mi (2,405.28 km) |
| Ortahisar to Obernburg am Main | 1,479.68 mi (2,381.31 km) |
| Ortahisar to Obernkirchen | 1,550.20 mi (2,494.81 km) |
| Ortahisar to Oberschleissheim | 1,337.22 mi (2,152.05 km) |
| Ortahisar to Oberstdorf | 1,374.55 mi (2,212.13 km) |
| Ortahisar to Obertraubling | 1,330.88 mi (2,141.84 km) |
| Ortahisar to Obertshausen | 1,498.21 mi (2,411.14 km) |
| Ortahisar to Oberursel | 1,512.27 mi (2,433.76 km) |
| Ortahisar to Ochsenfurt | 1,436.47 mi (2,311.77 km) |
| Ortahisar to Ochsenhausen | 1,403.23 mi (2,258.28 km) |
| Ortahisar to Ochtrup | 1,621.81 mi (2,610.06 km) |
| Ortahisar to Odenthal | 1,593.00 mi (2,563.68 km) |
| Ortahisar to Oelde | 1,574.00 mi (2,533.11 km) |
| Ortahisar to Oelsnitz | 1,374.53 mi (2,212.09 km) |
| Ortahisar to Oer-Erkenschwick | 1,603.75 mi (2,580.98 km) |
