| Oudenburg to Orzesze | 692.09 mi (1,113.81 km) |
| Oudenburg to Osowa | 682.28 mi (1,098.02 km) |
| Oudenburg to Ostroda | 733.50 mi (1,180.46 km) |
| Oudenburg to Ostroleka | 795.93 mi (1,280.92 km) |
| Oudenburg to Ostrow Mazowiecka | 809.44 mi (1,302.66 km) |
| Oudenburg to Ostrow Wielkopolski | 638.16 mi (1,027.02 km) |
| Oudenburg to Ostrowiec Swietokrzyski | 797.16 mi (1,282.90 km) |
| Oudenburg to Ostrzeszow | 644.20 mi (1,036.75 km) |
| Oudenburg to Oswiecim | 714.15 mi (1,149.31 km) |
| Oudenburg to Otwock | 783.65 mi (1,261.17 km) |
| Oudenburg to Ozarow Mazowiecki | 763.63 mi (1,228.95 km) |
| Oudenburg to Ozimek | 662.27 mi (1,065.82 km) |
| Oudenburg to Ozorkow | 699.83 mi (1,126.27 km) |
| Oudenburg to Pabianice | 705.21 mi (1,134.93 km) |
| Oudenburg to Parczew | 854.14 mi (1,374.61 km) |
