| Fern Down to Ilawa | 925.33 mi (1,489.18 km) |
| Fern Down to Imielin | 926.62 mi (1,491.25 km) |
| Fern Down to Inowroclaw | 869.27 mi (1,398.96 km) |
| Fern Down to Janow Lubelski | 1,057.92 mi (1,702.57 km) |
| Fern Down to Jarocin | 837.76 mi (1,348.24 km) |
| Fern Down to Jaroslaw | 1,078.59 mi (1,735.82 km) |
| Fern Down to Jasien | 889.48 mi (1,431.47 km) |
| Fern Down to Jaslo | 1,030.23 mi (1,657.99 km) |
| Fern Down to Jastrzebie-Zdroj | 901.55 mi (1,450.91 km) |
| Fern Down to Jawor | 786.40 mi (1,265.58 km) |
| Fern Down to Jaworzno | 928.01 mi (1,493.48 km) |
| Fern Down to Jedrzejow | 967.49 mi (1,557.03 km) |
| Fern Down to Jelcz-Laskowice | 835.47 mi (1,344.56 km) |
| Fern Down to Jelenia Gora | 767.34 mi (1,234.91 km) |
| Fern Down to Jozefoslaw | 987.78 mi (1,589.68 km) |
