| Kasterlee to Orzesze | 607.77 mi (978.10 km) |
| Kasterlee to Osowa | 604.31 mi (972.55 km) |
| Kasterlee to Ostroda | 652.88 mi (1,050.70 km) |
| Kasterlee to Ostroleka | 713.74 mi (1,148.66 km) |
| Kasterlee to Ostrow Mazowiecka | 726.78 mi (1,169.65 km) |
| Kasterlee to Ostrow Wielkopolski | 553.98 mi (891.55 km) |
| Kasterlee to Ostrowiec Swietokrzyski | 712.70 mi (1,146.99 km) |
| Kasterlee to Ostrzeszow | 559.86 mi (901.00 km) |
| Kasterlee to Oswiecim | 629.85 mi (1,013.65 km) |
| Kasterlee to Otwock | 700.05 mi (1,126.62 km) |
| Kasterlee to Ozarow Mazowiecki | 680.14 mi (1,094.58 km) |
| Kasterlee to Ozimek | 577.77 mi (929.82 km) |
| Kasterlee to Ozorkow | 616.01 mi (991.38 km) |
| Kasterlee to Pabianice | 621.08 mi (999.53 km) |
| Kasterlee to Parczew | 770.13 mi (1,239.41 km) |
