| Port Royal to Opole | 4,872.19 mi (7,841.03 km) |
| Port Royal to Orzesze | 4,920.70 mi (7,919.10 km) |
| Port Royal to Osowa | 4,773.44 mi (7,682.11 km) |
| Port Royal to Ostroda | 4,850.42 mi (7,806.00 km) |
| Port Royal to Ostroleka | 4,929.27 mi (7,932.90 km) |
| Port Royal to Ostrow Mazowiecka | 4,950.44 mi (7,966.96 km) |
| Port Royal to Ostrow Wielkopolski | 4,836.40 mi (7,783.43 km) |
| Port Royal to Ostrowiec Swietokrzyski | 4,996.03 mi (8,040.33 km) |
| Port Royal to Ostrzeszow | 4,848.24 mi (7,802.49 km) |
| Port Royal to Oswiecim | 4,942.75 mi (7,954.59 km) |
| Port Royal to Otwock | 4,950.56 mi (7,967.16 km) |
| Port Royal to Ozarow Mazowiecki | 4,929.93 mi (7,933.96 km) |
| Port Royal to Ozimek | 4,882.83 mi (7,858.15 km) |
| Port Royal to Ozorkow | 4,881.70 mi (7,856.33 km) |
| Port Royal to Pabianice | 4,895.81 mi (7,879.05 km) |
