| Overlea to Opole | 4,359.30 mi (7,015.61 km) |
| Overlea to Orzesze | 4,408.42 mi (7,094.66 km) |
| Overlea to Osowa | 4,250.97 mi (6,841.27 km) |
| Overlea to Ostroda | 4,328.49 mi (6,966.04 km) |
| Overlea to Ostroleka | 4,407.53 mi (7,093.24 km) |
| Overlea to Ostrow Mazowiecka | 4,429.01 mi (7,127.81 km) |
| Overlea to Ostrow Wielkopolski | 4,321.03 mi (6,954.02 km) |
| Overlea to Ostrowiec Swietokrzyski | 4,479.25 mi (7,208.66 km) |
| Overlea to Ostrzeszow | 4,333.37 mi (6,973.89 km) |
| Overlea to Oswiecim | 4,430.30 mi (7,129.88 km) |
| Overlea to Otwock | 4,431.14 mi (7,131.24 km) |
| Overlea to Ozarow Mazowiecki | 4,410.67 mi (7,098.28 km) |
| Overlea to Ozimek | 4,369.66 mi (7,032.29 km) |
| Overlea to Ozorkow | 4,364.28 mi (7,023.63 km) |
| Overlea to Pabianice | 4,379.08 mi (7,047.45 km) |
