| Petroupoli to Oberkirch | 1,064.84 mi (1,713.69 km) |
| Petroupoli to Obernburg am Main | 1,086.54 mi (1,748.62 km) |
| Petroupoli to Obernkirchen | 1,207.89 mi (1,943.91 km) |
| Petroupoli to Oberschleissheim | 931.24 mi (1,498.68 km) |
| Petroupoli to Oberstdorf | 937.01 mi (1,507.97 km) |
| Petroupoli to Obertraubling | 948.39 mi (1,526.28 km) |
| Petroupoli to Obertshausen | 1,107.25 mi (1,781.94 km) |
| Petroupoli to Oberursel | 1,121.99 mi (1,805.67 km) |
| Petroupoli to Ochsenfurt | 1,047.70 mi (1,686.12 km) |
| Petroupoli to Ochsenhausen | 977.99 mi (1,573.93 km) |
| Petroupoli to Ochtrup | 1,260.90 mi (2,029.23 km) |
| Petroupoli to Odenthal | 1,207.93 mi (1,943.97 km) |
| Petroupoli to Oelde | 1,213.87 mi (1,953.54 km) |
| Petroupoli to Oelsnitz | 1,025.58 mi (1,650.51 km) |
| Petroupoli to Oer-Erkenschwick | 1,232.07 mi (1,982.82 km) |
