| Koekelberg to Orzesze | 634.40 mi (1,020.97 km) |
| Koekelberg to Osowa | 640.26 mi (1,030.40 km) |
| Koekelberg to Ostroda | 687.56 mi (1,106.53 km) |
| Koekelberg to Ostroleka | 747.26 mi (1,202.60 km) |
| Koekelberg to Ostrow Mazowiecka | 759.84 mi (1,222.84 km) |
| Koekelberg to Ostrow Wielkopolski | 584.66 mi (940.93 km) |
| Koekelberg to Ostrowiec Swietokrzyski | 742.04 mi (1,194.20 km) |
| Koekelberg to Ostrzeszow | 589.92 mi (949.38 km) |
| Koekelberg to Oswiecim | 656.35 mi (1,056.29 km) |
| Koekelberg to Otwock | 731.87 mi (1,177.83 km) |
| Koekelberg to Ozarow Mazowiecki | 712.15 mi (1,146.10 km) |
| Koekelberg to Ozimek | 605.76 mi (974.88 km) |
| Koekelberg to Ozorkow | 647.50 mi (1,042.05 km) |
| Koekelberg to Pabianice | 651.83 mi (1,049.02 km) |
| Koekelberg to Parczew | 801.10 mi (1,289.25 km) |
