| Ecublens to Ilawa | 753.80 mi (1,213.13 km) |
| Ecublens to Imielin | 631.47 mi (1,016.25 km) |
| Ecublens to Inowroclaw | 677.72 mi (1,090.68 km) |
| Ecublens to Janow Lubelski | 777.94 mi (1,251.98 km) |
| Ecublens to Jarocin | 619.15 mi (996.42 km) |
| Ecublens to Jaroslaw | 777.71 mi (1,251.61 km) |
| Ecublens to Jasien | 753.20 mi (1,212.16 km) |
| Ecublens to Jaslo | 721.20 mi (1,160.65 km) |
| Ecublens to Jastrzebie-Zdroj | 600.80 mi (966.89 km) |
| Ecublens to Jawor | 537.99 mi (865.81 km) |
| Ecublens to Jaworzno | 635.27 mi (1,022.36 km) |
| Ecublens to Jedrzejow | 687.76 mi (1,106.84 km) |
| Ecublens to Jelcz-Laskowice | 580.06 mi (933.52 km) |
| Ecublens to Jelenia Gora | 515.44 mi (829.53 km) |
| Ecublens to Jozefoslaw | 755.64 mi (1,216.08 km) |
