| Casier to Orzesze | 430.90 mi (693.46 km) |
| Casier to Osowa | 664.79 mi (1,069.88 km) |
| Casier to Ostroda | 652.51 mi (1,050.11 km) |
| Casier to Ostroleka | 659.59 mi (1,061.50 km) |
| Casier to Ostrow Mazowiecka | 655.92 mi (1,055.60 km) |
| Casier to Ostrow Wielkopolski | 484.69 mi (780.03 km) |
| Casier to Ostrowiec Swietokrzyski | 554.49 mi (892.36 km) |
| Casier to Ostrzeszow | 474.22 mi (763.18 km) |
| Casier to Oswiecim | 441.17 mi (710.00 km) |
| Casier to Otwock | 603.78 mi (971.69 km) |
| Casier to Ozarow Mazowiecki | 594.77 mi (957.18 km) |
| Casier to Ozimek | 440.97 mi (709.68 km) |
| Casier to Ozorkow | 539.33 mi (867.97 km) |
| Casier to Pabianice | 525.23 mi (845.27 km) |
| Casier to Parczew | 634.22 mi (1,020.67 km) |
