| Plonsk to Oerlinghausen | 496.64 mi (799.26 km) |
| Plonsk to Oestrich-Winkel | 564.02 mi (907.69 km) |
| Plonsk to Offenburg | 616.61 mi (992.35 km) |
| Plonsk to Oftersheim | 559.49 mi (900.42 km) |
| Plonsk to Ohrdruf | 431.02 mi (693.66 km) |
| Plonsk to Ohringen | 529.38 mi (851.95 km) |
| Plonsk to Olbernhau | 331.19 mi (532.99 km) |
| Plonsk to Olching | 502.53 mi (808.74 km) |
| Plonsk to Oldenburg | 507.93 mi (817.44 km) |
| Plonsk to Oldenburg in Holstein | 406.99 mi (654.99 km) |
| Plonsk to Olfen | 553.69 mi (891.08 km) |
| Plonsk to Olpe | 546.70 mi (879.83 km) |
| Plonsk to Olsberg | 513.38 mi (826.21 km) |
| Plonsk to Oranienburg | 299.25 mi (481.60 km) |
| Plonsk to Ortenberg | 511.43 mi (823.07 km) |
