| Fern Down to Opole | 864.69 mi (1,391.59 km) |
| Fern Down to Orzesze | 906.11 mi (1,458.24 km) |
| Fern Down to Osowa | 886.73 mi (1,427.06 km) |
| Fern Down to Ostroda | 942.15 mi (1,516.24 km) |
| Fern Down to Ostroleka | 1,007.01 mi (1,620.63 km) |
| Fern Down to Ostrow Mazowiecka | 1,021.27 mi (1,643.58 km) |
| Fern Down to Ostrow Wielkopolski | 852.42 mi (1,371.83 km) |
| Fern Down to Ostrowiec Swietokrzyski | 1,011.73 mi (1,628.22 km) |
| Fern Down to Ostrzeszow | 858.67 mi (1,381.89 km) |
| Fern Down to Oswiecim | 928.10 mi (1,493.64 km) |
| Fern Down to Otwock | 997.03 mi (1,604.57 km) |
| Fern Down to Ozarow Mazowiecki | 976.85 mi (1,572.09 km) |
| Fern Down to Ozimek | 876.75 mi (1,410.99 km) |
| Fern Down to Ozorkow | 913.58 mi (1,470.27 km) |
| Fern Down to Pabianice | 919.40 mi (1,479.63 km) |
