| Ilioupoli to Oberkirch | 1,072.40 mi (1,725.87 km) |
| Ilioupoli to Obernburg am Main | 1,094.26 mi (1,761.03 km) |
| Ilioupoli to Obernkirchen | 1,215.69 mi (1,956.46 km) |
| Ilioupoli to Oberschleissheim | 938.94 mi (1,511.08 km) |
| Ilioupoli to Oberstdorf | 944.58 mi (1,520.15 km) |
| Ilioupoli to Obertraubling | 956.15 mi (1,538.78 km) |
| Ilioupoli to Obertshausen | 1,114.96 mi (1,794.35 km) |
| Ilioupoli to Oberursel | 1,129.70 mi (1,818.08 km) |
| Ilioupoli to Ochsenfurt | 1,055.44 mi (1,698.56 km) |
| Ilioupoli to Ochsenhausen | 985.61 mi (1,586.19 km) |
| Ilioupoli to Ochtrup | 1,268.67 mi (2,041.72 km) |
| Ilioupoli to Odenthal | 1,215.64 mi (1,956.39 km) |
| Ilioupoli to Oelde | 1,221.64 mi (1,966.04 km) |
| Ilioupoli to Oelsnitz | 1,033.38 mi (1,663.06 km) |
| Ilioupoli to Oer-Erkenschwick | 1,239.81 mi (1,995.28 km) |
