| Leek to Opole | 864.62 mi (1,391.47 km) |
| Leek to Orzesze | 910.61 mi (1,465.49 km) |
| Leek to Osowa | 838.88 mi (1,350.05 km) |
| Leek to Ostroda | 903.10 mi (1,453.40 km) |
| Leek to Ostroleka | 974.49 mi (1,568.28 km) |
| Leek to Ostrow Mazowiecka | 991.42 mi (1,595.53 km) |
| Leek to Ostrow Wielkopolski | 840.09 mi (1,351.99 km) |
| Leek to Ostrowiec Swietokrzyski | 1,002.57 mi (1,613.47 km) |
| Leek to Ostrzeszow | 849.15 mi (1,366.58 km) |
| Leek to Oswiecim | 932.89 mi (1,501.34 km) |
| Leek to Otwock | 975.17 mi (1,569.39 km) |
| Leek to Ozarow Mazowiecki | 954.35 mi (1,535.87 km) |
| Leek to Ozimek | 876.06 mi (1,409.88 km) |
| Leek to Ozorkow | 895.55 mi (1,441.25 km) |
| Leek to Pabianice | 905.04 mi (1,456.52 km) |
