| Swallownest to Opole | 837.08 mi (1,347.15 km) |
| Swallownest to Orzesze | 883.56 mi (1,421.95 km) |
| Swallownest to Osowa | 806.64 mi (1,298.17 km) |
| Swallownest to Ostroda | 871.45 mi (1,402.47 km) |
| Swallownest to Ostroleka | 943.29 mi (1,518.08 km) |
| Swallownest to Ostrow Mazowiecka | 960.44 mi (1,545.68 km) |
| Swallownest to Ostrow Wielkopolski | 811.14 mi (1,305.41 km) |
| Swallownest to Ostrowiec Swietokrzyski | 973.67 mi (1,566.98 km) |
| Swallownest to Ostrzeszow | 820.51 mi (1,320.49 km) |
| Swallownest to Oswiecim | 905.82 mi (1,457.78 km) |
| Swallownest to Otwock | 944.97 mi (1,520.79 km) |
| Swallownest to Ozarow Mazowiecki | 924.11 mi (1,487.22 km) |
| Swallownest to Ozimek | 848.42 mi (1,365.41 km) |
| Swallownest to Ozorkow | 865.87 mi (1,393.48 km) |
| Swallownest to Pabianice | 875.74 mi (1,409.36 km) |
