| Opera to Orzesze | 551.10 mi (886.91 km) |
| Opera to Osowa | 746.99 mi (1,202.16 km) |
| Opera to Ostroda | 748.33 mi (1,204.33 km) |
| Opera to Ostroleka | 767.69 mi (1,235.49 km) |
| Opera to Ostrow Mazowiecka | 767.37 mi (1,234.96 km) |
| Opera to Ostrow Wielkopolski | 584.33 mi (940.39 km) |
| Opera to Ostrowiec Swietokrzyski | 678.63 mi (1,092.15 km) |
| Opera to Ostrzeszow | 576.87 mi (928.38 km) |
| Opera to Oswiecim | 564.74 mi (908.86 km) |
| Opera to Otwock | 717.96 mi (1,155.44 km) |
| Opera to Ozarow Mazowiecki | 706.16 mi (1,136.46 km) |
| Opera to Ozimek | 552.82 mi (889.68 km) |
| Opera to Ozorkow | 645.30 mi (1,038.50 km) |
| Opera to Pabianice | 634.52 mi (1,021.17 km) |
| Opera to Parczew | 757.62 mi (1,219.27 km) |
