| Roskilde to Orzesze | 470.30 mi (756.88 km) |
| Roskilde to Osowa | 266.52 mi (428.92 km) |
| Roskilde to Ostroda | 342.31 mi (550.89 km) |
| Roskilde to Ostroleka | 421.02 mi (677.56 km) |
| Roskilde to Ostrow Mazowiecka | 442.19 mi (711.63 km) |
| Roskilde to Ostrow Wielkopolski | 362.43 mi (583.27 km) |
| Roskilde to Ostrowiec Swietokrzyski | 503.50 mi (810.31 km) |
| Roskilde to Ostrzeszow | 378.24 mi (608.71 km) |
| Roskilde to Oswiecim | 488.43 mi (786.06 km) |
| Roskilde to Otwock | 446.08 mi (717.89 km) |
| Roskilde to Ozarow Mazowiecki | 426.13 mi (685.78 km) |
| Roskilde to Ozimek | 427.12 mi (687.38 km) |
| Roskilde to Ozorkow | 388.31 mi (624.93 km) |
| Roskilde to Pabianice | 406.74 mi (654.59 km) |
| Roskilde to Parczew | 520.79 mi (838.13 km) |
