| Duffel to Imielin | 646.81 mi (1,040.94 km) |
| Duffel to Inowroclaw | 595.96 mi (959.10 km) |
| Duffel to Janow Lubelski | 778.39 mi (1,252.69 km) |
| Duffel to Jarocin | 560.47 mi (901.99 km) |
| Duffel to Jaroslaw | 798.68 mi (1,285.35 km) |
| Duffel to Jasien | 627.59 mi (1,010.00 km) |
| Duffel to Jaslo | 750.46 mi (1,207.75 km) |
| Duffel to Jastrzebie-Zdroj | 622.00 mi (1,001.01 km) |
| Duffel to Jawor | 506.67 mi (815.40 km) |
| Duffel to Jaworzno | 648.15 mi (1,043.10 km) |
| Duffel to Jedrzejow | 687.69 mi (1,106.73 km) |
| Duffel to Jelcz-Laskowice | 555.80 mi (894.48 km) |
| Duffel to Jelenia Gora | 487.47 mi (784.50 km) |
| Duffel to Jozefoslaw | 711.20 mi (1,144.57 km) |
| Duffel to Jozefow | 719.10 mi (1,157.27 km) |
