| Sluis to Orzesze | 675.43 mi (1,087.00 km) |
| Sluis to Osowa | 663.49 mi (1,067.79 km) |
| Sluis to Ostroda | 714.85 mi (1,150.45 km) |
| Sluis to Ostroleka | 777.47 mi (1,251.22 km) |
| Sluis to Ostrow Mazowiecka | 791.07 mi (1,273.10 km) |
| Sluis to Ostrow Wielkopolski | 620.39 mi (998.43 km) |
| Sluis to Ostrowiec Swietokrzyski | 779.70 mi (1,254.81 km) |
| Sluis to Ostrzeszow | 626.60 mi (1,008.41 km) |
| Sluis to Oswiecim | 697.53 mi (1,122.56 km) |
| Sluis to Otwock | 765.57 mi (1,232.06 km) |
| Sluis to Ozarow Mazowiecki | 745.51 mi (1,199.78 km) |
| Sluis to Ozimek | 645.22 mi (1,038.38 km) |
| Sluis to Ozorkow | 681.85 mi (1,097.33 km) |
| Sluis to Pabianice | 687.41 mi (1,106.28 km) |
| Sluis to Parczew | 836.24 mi (1,345.80 km) |
