| Middelharnis to Orzesze | 643.07 mi (1,034.92 km) |
| Middelharnis to Osowa | 620.32 mi (998.31 km) |
| Middelharnis to Ostroda | 673.12 mi (1,083.28 km) |
| Middelharnis to Ostroleka | 737.02 mi (1,186.12 km) |
| Middelharnis to Ostrow Mazowiecka | 751.13 mi (1,208.83 km) |
| Middelharnis to Ostrow Wielkopolski | 583.57 mi (939.16 km) |
| Middelharnis to Ostrowiec Swietokrzyski | 744.06 mi (1,197.44 km) |
| Middelharnis to Ostrzeszow | 590.47 mi (950.27 km) |
| Middelharnis to Oswiecim | 665.28 mi (1,070.67 km) |
| Middelharnis to Otwock | 727.10 mi (1,170.15 km) |
| Middelharnis to Ozarow Mazowiecki | 706.85 mi (1,137.57 km) |
| Middelharnis to Ozimek | 611.40 mi (983.95 km) |
| Middelharnis to Ozorkow | 643.94 mi (1,036.31 km) |
| Middelharnis to Pabianice | 650.33 mi (1,046.60 km) |
| Middelharnis to Parczew | 798.63 mi (1,285.28 km) |
