| Lake in the Hills to Opole | 4,641.78 mi (7,470.22 km) |
| Lake in the Hills to Orzesze | 4,692.26 mi (7,551.47 km) |
| Lake in the Hills to Osowa | 4,495.68 mi (7,235.10 km) |
| Lake in the Hills to Ostroda | 4,574.44 mi (7,361.85 km) |
| Lake in the Hills to Ostroleka | 4,653.02 mi (7,488.31 km) |
| Lake in the Hills to Ostrow Mazowiecka | 4,675.59 mi (7,524.64 km) |
| Lake in the Hills to Ostrow Wielkopolski | 4,594.85 mi (7,394.70 km) |
| Lake in the Hills to Ostrowiec Swietokrzyski | 4,744.90 mi (7,636.18 km) |
| Lake in the Hills to Ostrzeszow | 4,608.90 mi (7,417.31 km) |
| Lake in the Hills to Oswiecim | 4,713.20 mi (7,585.16 km) |
| Lake in the Hills to Otwock | 4,686.62 mi (7,542.38 km) |
| Lake in the Hills to Ozarow Mazowiecki | 4,667.15 mi (7,511.05 km) |
| Lake in the Hills to Ozimek | 4,650.94 mi (7,484.97 km) |
| Lake in the Hills to Ozorkow | 4,629.25 mi (7,450.06 km) |
| Lake in the Hills to Pabianice | 4,646.59 mi (7,477.96 km) |
