| Roman to Opole | 483.56 mi (778.21 km) |
| Roman to Orzesze | 434.99 mi (700.05 km) |
| Roman to Osowa | 635.83 mi (1,023.27 km) |
| Roman to Ostroda | 559.04 mi (899.70 km) |
| Roman to Ostroleka | 486.02 mi (782.17 km) |
| Roman to Ostrow Mazowiecka | 463.07 mi (745.23 km) |
| Roman to Ostrow Wielkopolski | 523.76 mi (842.90 km) |
| Roman to Ostrowiec Swietokrzyski | 373.31 mi (600.79 km) |
| Roman to Ostrzeszow | 510.53 mi (821.61 km) |
| Roman to Oswiecim | 412.91 mi (664.51 km) |
| Roman to Otwock | 438.96 mi (706.44 km) |
| Roman to Ozarow Mazowiecki | 456.67 mi (734.94 km) |
| Roman to Ozimek | 473.09 mi (761.36 km) |
| Roman to Ozorkow | 488.47 mi (786.11 km) |
| Roman to Pabianice | 470.73 mi (757.57 km) |
