| Plonsk to Opole | 171.72 mi (276.35 km) |
| Plonsk to Orzesze | 185.45 mi (298.46 km) |
| Plonsk to Osowa | 146.73 mi (236.13 km) |
| Plonsk to Ostroda | 75.69 mi (121.82 km) |
| Plonsk to Ostroleka | 57.75 mi (92.94 km) |
| Plonsk to Ostrow Mazowiecka | 64.51 mi (103.83 km) |
| Plonsk to Ostrow Wielkopolski | 128.32 mi (206.51 km) |
| Plonsk to Ostrowiec Swietokrzyski | 125.24 mi (201.55 km) |
| Plonsk to Ostrzeszow | 133.83 mi (215.39 km) |
| Plonsk to Oswiecim | 186.19 mi (299.64 km) |
| Plonsk to Otwock | 51.60 mi (83.04 km) |
| Plonsk to Ozarow Mazowiecki | 33.72 mi (54.26 km) |
| Plonsk to Ozimek | 164.29 mi (264.40 km) |
| Plonsk to Ozorkow | 65.43 mi (105.30 km) |
| Plonsk to Pabianice | 80.08 mi (128.88 km) |
