| Ano Syros to Oberkirch | 1,139.38 mi (1,833.65 km) |
| Ano Syros to Obernburg am Main | 1,158.76 mi (1,864.84 km) |
| Ano Syros to Obernkirchen | 1,276.84 mi (2,054.87 km) |
| Ano Syros to Oberschleissheim | 1,003.59 mi (1,615.12 km) |
| Ano Syros to Oberstdorf | 1,011.54 mi (1,627.92 km) |
| Ano Syros to Obertraubling | 1,019.03 mi (1,639.97 km) |
| Ano Syros to Obertshausen | 1,179.40 mi (1,898.06 km) |
| Ano Syros to Oberursel | 1,194.16 mi (1,921.81 km) |
| Ano Syros to Ochsenfurt | 1,119.41 mi (1,801.52 km) |
| Ano Syros to Ochsenhausen | 1,051.92 mi (1,692.90 km) |
| Ano Syros to Ochtrup | 1,331.53 mi (2,142.90 km) |
| Ano Syros to Odenthal | 1,280.08 mi (2,060.10 km) |
| Ano Syros to Oelde | 1,284.24 mi (2,066.78 km) |
| Ano Syros to Oelsnitz | 1,093.97 mi (1,760.58 km) |
| Ano Syros to Oer-Erkenschwick | 1,303.37 mi (2,097.57 km) |
