| Postojna to Oberkirch | 345.18 mi (555.51 km) |
| Postojna to Obernburg am Main | 366.23 mi (589.39 km) |
| Postojna to Obernkirchen | 504.10 mi (811.27 km) |
| Postojna to Oberschleissheim | 211.56 mi (340.48 km) |
| Postojna to Oberstdorf | 218.23 mi (351.20 km) |
| Postojna to Obertraubling | 240.29 mi (386.71 km) |
| Postojna to Obertshausen | 387.03 mi (622.87 km) |
| Postojna to Oberursel | 401.66 mi (646.41 km) |
| Postojna to Ochsenfurt | 329.76 mi (530.70 km) |
| Postojna to Ochsenhausen | 256.23 mi (412.37 km) |
| Postojna to Ochtrup | 546.03 mi (878.75 km) |
| Postojna to Odenthal | 487.33 mi (784.28 km) |
| Postojna to Oelde | 500.92 mi (806.15 km) |
| Postojna to Oelsnitz | 334.24 mi (537.90 km) |
| Postojna to Oer-Erkenschwick | 514.36 mi (827.79 km) |
