| Plonsk to Oberkirch | 608.35 mi (979.05 km) |
| Plonsk to Obernburg am Main | 522.52 mi (840.92 km) |
| Plonsk to Obernkirchen | 474.57 mi (763.75 km) |
| Plonsk to Oberschleissheim | 491.59 mi (791.14 km) |
| Plonsk to Oberstdorf | 574.82 mi (925.08 km) |
| Plonsk to Obertraubling | 438.84 mi (706.24 km) |
| Plonsk to Obertshausen | 528.32 mi (850.24 km) |
| Plonsk to Oberursel | 534.98 mi (860.97 km) |
| Plonsk to Ochsenfurt | 491.84 mi (791.54 km) |
| Plonsk to Ochsenhausen | 556.78 mi (896.05 km) |
| Plonsk to Ochtrup | 555.94 mi (894.69 km) |
| Plonsk to Odenthal | 576.25 mi (927.38 km) |
| Plonsk to Oelde | 519.97 mi (836.81 km) |
| Plonsk to Oelsnitz | 384.70 mi (619.12 km) |
| Plonsk to Oer-Erkenschwick | 560.31 mi (901.73 km) |
