| Leek to Ilawa | 887.58 mi (1,428.42 km) |
| Leek to Imielin | 930.33 mi (1,497.21 km) |
| Leek to Inowroclaw | 841.88 mi (1,354.87 km) |
| Leek to Janow Lubelski | 1,049.39 mi (1,688.84 km) |
| Leek to Jarocin | 821.68 mi (1,322.37 km) |
| Leek to Jaroslaw | 1,076.60 mi (1,732.63 km) |
| Leek to Jasien | 842.72 mi (1,356.23 km) |
| Leek to Jaslo | 1,033.38 mi (1,663.06 km) |
| Leek to Jastrzebie-Zdroj | 908.76 mi (1,462.51 km) |
| Leek to Jawor | 784.53 mi (1,262.58 km) |
| Leek to Jaworzno | 930.79 mi (1,497.96 km) |
| Leek to Jedrzejow | 963.45 mi (1,550.52 km) |
| Leek to Jelcz-Laskowice | 831.83 mi (1,338.71 km) |
| Leek to Jelenia Gora | 768.38 mi (1,236.59 km) |
| Leek to Jozefoslaw | 966.33 mi (1,555.15 km) |
